Thetenders.com
  +91 92760 83333 / +91 92743 15555
  • Indian Tenders
  • |
  • Global Tenders
  • |
  • Projects
  • |
  • Tender Awarded
  • |
  • Sub-Contractor
  • Pay Online
  • Register now
  • Login
  • Indian Tenders Tender information of India
  • Global Tenders International Tender information
  • Projects Project information of India
  • Tender Awarded Tender awarded information
  • Sub-Contractor Vendor information of India
  • Pay Online
  • Register now
  • Login
  • Contact Info All India : 9276083333 / 9274315555 South India : 9274315555
TheTenders
»
Indian Tenders
»
Keyword Tenders
»
Digital Voltmeter
Filters
  • » By Keywords
  • » By Cities
  • » By States
  • » By Agencies
  • » By Sectors
  • » By Ownerships
  • Tender Value

List of digital voltmeter Tenders

List of latest digital voltmeter Tenders in Indian Tenders. Click on any digital voltmeter Tenders to view BOQ, NIT and Tender Documents. Get GeM Registration and Bidding Support, Vendor Registration for digital voltmeter Tenders.

Advance Search
  • All-Tenders (11)
  • |
  • Today's-Tenders
  • |
  • Active-Tenders
  • |
  • Closed-Tenders
1 Education And Research Institutes
image image
State Government
TRN :36166849 |  01 Jan, 2026
Tender Value : 0
 Kottayam - Kerala
Tender for gem bids for lab, colorimeter, magnetic stirrer, micropipette fixed volume, micropipettevariable, haemocytometer, stage micrometer, ocular micrometer, dissection microscopes, laboratorycentrifuge, trinocular stereo microscope, water bath, microtome, distillation unit, clevenger apparatus, refrigerator, digital camera, klinostat, balance, centrifuge, digital ph meter, conductivity meter, bunsenburner, muffle furnace, vacuum pump, hot air oven, water bath, digital potentimeter, kipps apparatus, waterdistillation unit, microwave oven, colorimeter, digitalstorage oscilloscope, function generator, digital trainerkit, dual power supply, regulated power supply, rheostats, resistance, constantan coil, daniel cell electronic, digitalammeter voltmeter, voltmeter, transformer, laser, spectrometer deluxe, spectrometer, air wedge plate, navapour lamp, hg vapour lamp, compound pendulums, katers pendulum, torsion pendulum with, dimmerstat, tangent galvanometer, decade condensor, decadeinductance, deflection, vibration magnetometer withcompass, sonometer, slotted wt, newtons law of coolingapparatus, thermistor characteristics apparatus, equilateral quartz prism, equilateral glass prism, lees diskapparatus, rf oscillator, travelling microscope, heatingmantle, spring constant, camera lucida, binocularmicroscope, compund student microscope, haemoglobinometer, b p apparatus, stethoscope, phmeter, colony counter, bottle top dispenser, analyticaldigital balance, spectrophotometer, laminar air flow, soxhlet apparatus, heating mantle
  • View Tender
  • Document
  • Bid Support
2 Services
image image
Central Government/Public Sector
TRN :36153549 |  02 Jan, 2026
Tender Value : 1.86 Crore
 Jodhpur - Rajasthan
Tender for gem bids for instrument, trainer on basic digital electronics i e logic gates, traineron power suppliers half wave rectifier, scr driven orcontrolled power supply trainer, potentiometer orthermocouple test set, auto transformer, calibration testbench for ac and dc voltmeter, bourdon tube type gaugesof various ranges, dead weight tester and comparator, differential pressure transmitter electronic- hart or fieldbus type, pressure transducers training kits, experimentalset up for pressure measurement, hart devicecommunicator and calibrator, pneumatic calibrator, pressure switches of various ranges, p to i converter and ito p converter, vacuum tester with pump, simple tankquantity meter, impeller type flow meter, helical andturbine flow meter, magnetic flow meter, vortex flowmeter, flow control loop set with flow controller recorder, experiment closed loop set up solid flow measurementand control, corioils mass flow meter, flow nozzle, staticpressure and air type purge type level indicator, leveltransmitter interface hart compatible, level control setup with transmitter and level recorder, levelmeasurement eequipments for solid, experimental set upfor measuring and controlling of temperature, paper lesslcd or led recorder setup, real pid controller trainig kit, programmable logic controller, hart or filed devices, hydrauilc actuators, different type of control valves suchas gate valves, valve positioner, hart or filed bus finalcontrol elements, data acquisiton syastem, adc to daccards, digital i or o cards, conductivity meter and tdsmeter, experimental set up for online conductivitymeasurement, experimental set up for online phmeasurement, experimental set up for online dissolvedoxygen measurement  /bid number: gem/2025/b/6999540* /dated: 15-12-2025  & & / bid document1 / 38
  • View Tender
  • Document
  • Bid Support
3 Coal And Lignite
image image
Central Government/Public Sector
TRN :36154782 |  07 Jan, 2026
Tender Value : 8.29 Lacs
 Korba - Chhattisgarh
Tender for gem bids for fuse fitting_4vc680210 , fuse link_4vc680211 , micro switch_j957-4180 , toggle switch 10 amps_j4vc8-090 , rectifier unit_j957-4194 , auxiliary switch_j957-4181 , local remote switch 2 pole 2_j957-4182 , breaker control swith 1 pole trip-neutral-close_j957-4183 , alarm bell hooter_j309- 777 , digital power factor meter_j479-652 , trip neutral close switch_j479-677 , indicating lamp fitting set consist of 08 pcs._j310-092c , local remote selection switch_j479- 657 , two pole on-off mcb for ac control supply_j479-660 , trivector meter_j479-735 , energy meter_j479698 , ammeter selector switch_j309025 , voltmeter selector switch_j309024 , two pole on-off mcb for dc control supply_j479-651 , toggle switch sw2 sw4_j4vc8-090a , breaker control swith_j579721 , wiring kit complete_j579- 735
  • View Tender
  • Document
  • Bid Support
4 Education And Research Institutes
image image
State Government
TRN :36129262 |  29 Dec, 2025
Tender Value : 0
 Osmanabad - Maharashtra
Tender for gem bids for solar, bid number gem2025b6941346 dated 14-12-2025 bid document1 54 1 1 providing and supply of rooftop mounting structure, providing and supply of array junction box, providing andsupply of cut models of photo voltaic cell assembly, providing and supply of cut model of lead acid battery, providing and supply of sun path finder, providing andsupply of solar dc pump 1 hp, providing and supply ofscrew driver insulated, providing and supply of punchcentre, providing and supply of hammer cross peen withhandle, providing and supply of pipe vice cast iron withhardened jaw open type 100 mm, providing and supply oftable vice, providing and supply of gauge wire imperialmm, providing and supply of crimping tool, providing andsupply of pliers side cutting, providing and supply of wirestripper adjustable length, providing and supply of tool kitbox portable 5 comparment, providing and supply of allenkey set, providing and supply of scissors blade, providingand supply of lamp tube light cfl, led light, heater andgeyser isi, providing and supply of torque wrench, providing and supply of pipe cutter to cut pipes 5 cm, providing and supply of multi meter analog microa to 10adc and ac, providing and supply of load bank variable, providing and supply of wire cutter and stripper 150 mm, providing and supply of earth plate, providing and supplyof tap set 25 mm set in box, providing and supply oftrolley for transportation of batteries, providing and supplyof lux meter, providing and supply of magnetic flux meter0-500 tesla, providing and supply of tong tester clampmeter, providing and supply of soldering iron, providingand supply of temperature controlled soldering iron 50watt, 230 volt, providing and supply of thermometerdigital 0 c 150 c, providing and supply of magneticcompass 100 mm, providing and supply of frequencymeter 45 to 55 hz meco, providing and supply of inverterwith battery, providing and supply of lead acid battery 12v40ah, 75ah, providing and supply of lead acid battery 1210 amp. portable in box 100 ah, providing and supply ofmotorized bench grinder, providing and supply of batterycharger, providing and supply of dc table fan, providingand supply of a.c. voltmeter mi 0 500v ac portable in box, providing and supply of volt meter 0 - 30v portable in box, providing and supply of volt meter 0 - 100v portable in box, providing and supply of ammeter mc 0-1 amp. portable inbox, providing and supply of ammeter mc 0-5 ampportable in box, providing and supply of ammeter mc 0-20amp centre zero portable in box, providing and supply ofammeter mc 0-50 amp centre zero portable in box, providing and supply of power factor meter, providing andsupply of rheostat, providing and supply of ac energymeter, providing and supply of kilo wattmeter analogportable in box, providing and supply of digital wattmeter, providing and supply of phase sequence indicator, providing and supply material keeping rackproviding and supply of rooftop mounting structure for 4 x250 w solar panel mounting practice with tilt adjustment, providing and supply of array junction box for connecting250 w x 4 nos. solar panel with dc fuse, dc mcb and surgesuppressor protection, providing and supply of cut modelsof photo voltaic cell assembly, providing and supply of cutmodel of lead acid battery 100 amp, providing and supplyof sun path finder, providing and supply of solar dc pump 1hp, providing and supply of screw driver insulated 4 x 150    //bid details2 / 54
  • View Tender
  • Document
  • Bid Support
5 Education And Research Institutes
image image
State Government
TRN :36114172 |  26 Dec, 2025
Tender Value : 0
 Cuttack - Orissa
Tender for gem bids for ohm meter, ac voltmeter, milli voltmeter, ammeter mc, ac ammeter, kilo wattmeter, digital wattmeter, acenergy meter single phase, ac energy meter three phase, power factor meter digital, frequency meter, magneticflux meter, lux meter, tachometer, tong tester, megger, dc starter, wheat stone bridge, single phase variableauto transformer, phase sequence indicator, growler, acstarters, soldering iron, temperature controlled, discretecomponent trainer, linear ic trainer, domestic appliance, oil testing kit, inverter with battery, voltage stabilizer, dc power supply, battery charger, current transformer, potential transformer, solar panel with battery, computer, laser printer, dc shunt generator, motorgenerator ac to dc, dc compound generator with controlpanel, dc series motor coupled, dc shunt motor, dccompound motor with starter, motor generatordc to ac, ac squirrel cage motor with star delta starter, ac phasewound slip ring motor with starter, universal motor withstarter switch, synchronous motor with accessories, thyristor igbt controlled, thyristor igbt controlled acmotor drive, single phase transformer core type air cooled, three phase transformer shell type oil cooled with deltastar, ac series type motor, single phase capacitor motorwith starter, manual motor coil winding machine, ceilingfan coil winding machine, primary current injection set, stepper motor with digital controller, shaded pole motor, smart meter, ev charger, ev charger home
  • View Tender
  • Document
  • Bid Support
6 Coal And Lignite
image image
Central Government/Public Sector
TRN :36116095 |  03 Jan, 2026
Tender Value : 24.5 Thousand
 Korba - Chhattisgarh
Tender for gem bids for voltmeter digital, ampere meter digital, local remoteswitch
  • View Tender
  • Document
  • Bid Support
7 Shipping Transport
image image
Central Government/Public Sector
TRN :36104808 |  31 Dec, 2025
Tender Value : 0
 Panaji - Goa
Tender for gem bids for ta no l ta 1258 309924 01 sl no 4 1 megohmmeter e6 24 1 or equivalent equipment code 9208141003 as per annexure 1 with documantation , ta no l ta 1258 309924 01 sl no 4 1 multifunctional clamp meter equipment code 9208141004 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 multimeter b7 86 or equivalent equipment code 9208141005 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 luxmeter yu 117 or equivalant equipment code 9208141008 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 portable megohmeter measurement range equipment code 9208141009 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 resistance meter equipment code 9208141010 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 oscilloscope multimeter ak i p 4125 1 equipment code 9208141013 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 oscilloscope multimeter ak i p 4125 1 in theoscilloscope mode number of channels 2 equipment code 9208141013 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 oscilloscope phase indicator 5001 or equivalent equipment code 9208141014 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 portable voltage indicator operating voltage equipment code 9208141022 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 microoh meter miko 21 resistance equipment code 9208141023 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 pyrometer sight ms equipment code 9208141024 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 phase meter ts 1424 or equivalent equipment code 9208141028 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 sound meter accuracy class 1 2 or e quivalent equipment code 9208141040 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 electric thermometer equipment code 9208141048 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 insulation resistance meter appa 605 equipment code 9208141060 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1milliohmmeter portable tes ter equipment code 9208141072 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 megaohmmeter equipment code 9208141073 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 millivoltmeter frequency equipment code 9208141082 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1microvoltmeter frequency equipment code 9208141084 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 selective voltmeter equipment code 9208141085 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 megohmmeter e6 24 1 equipment code 9208141003 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 multimeter b7 62 or equivalent equipment code 9208141068 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 digital two channel storage oscilloscope equipment code 9208141074 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 low frequency signal generator equipment code 9208141083 as per annexure 1 with documentation , ta no l ta 1258 309924 01 sl no 4 1 general purpose oscilloscope c1 127 or equivalent equipment code 9208141069 as per annexure 1 with documentation , ta no l ta 1258 309924 02 sl no 4 1 portable telephone equipment code 9208141001 as per annexure 1 with documentation , ta no l ta 1258 309924 02 sl no 4 1 ordinary calculator equipment code 9208141006 as per annexure 1 with documentation , ta no l ta 1258 309924 02 sl no 4 1 resistor equipment code 9208141012 as per annexure 1 with documentation , ta no l ta 1258 309924 02 sl no 4 1 resistor box no 40 type c 6 om equipment code 9208141025 as per annexure 1 with documentation , ta no l ta 1258 309924 02 sl no 4 1 rechargeable lead acid battery equipment code 9208141037 as per annexure 1 with documentation , ta no l ta 1258 309924 02 sl no 4 1 handheld magnetic compass equipment code 9208141039 as per annexure 1 with documentation , ta no l ta 1258 309924 02 sl no 4 1 corded tester solo 424 equipment code 9208141044 as per annexure 1 with documentation , ta no l ta 1258 309924 02 sl no 4 1 telescopic access pole solo 108 equipment code 9208141045 as per annexure 1 with documentation , ta no l ta 1258 309924 02 sl no 4 1 aerosol sprayer solo 330 equipment code 9208141089 as per annexure 1 with documentation
  • View Tender
  • Document
  • Bid Support
8 Railway Transport
image image
Central Government/Public Sector
TRN :36091386 |  05 Jan, 2026
Tender Value : 0
 Ranchi - Jharkhand
Tender for supply of digital voltmeter
  • View Tender
  • Document
  • Bid Support
9 Services
image image
Central Government/Public Sector
TRN :36077675 |  30 Dec, 2025
Tender Value : 3.00 Lacs
 Kondagaon - Chhattisgarh
Tender for gem bids for ammeter milliammeter micrometer voltmeter rheostat battery eliminator connecting wire meter bridge resistance wire one way key pencil jockey step down transformer horse shoe magnet bar magnet optical bench with accessories 1 meter brass concave mirror convex mirror optical needles meter scale concave lens convex lens drawing board glass prism white sheet paper traveling microscope with vernier scale glass slab iron stand pn junction diode spherometer plane mirror digital stop watch gravesand apparatus hanger with slotted weight 10 gram hanger with slotted weight 100 gram helical apparatus hooks law resonance apparatus sonometer complete set tunning fork 512 hertz newtons law of cooling apparatus thermometer laboratory thermometer galvanometer beaker 150 ml tripod stand wire guage glass rod funnel 3 filter paper bunsen burner test tube 150mm x 18mm test tube stand dropper test tube holder with wooden handle ignition tube china dish tongs standard flask pipette 10ml burrette borosilicate glass concical flask 150 ml clamp stand wash bottle aluminium hydroxide ferric hydroxide hydrogen peroxide potassium iodate sodium sulphate copper sulphate sodium nitrate acetone chloroform potash alum oxalic acid ferrous ammonium sulphate formic acid benzoic acid iodine solution compound microscope test tube 150mm x 18mm test tube holder with wooden handle beaker 100 ml beaker 250 ml conical flask 250 ml funnel dropper watch glass 2 measuring cylinder 100 ml spirit lamp burner tripod stand wire guage dissection box set of 19 pcs plain slide cover slip permananet slide model of dna model of rna common plant specimen for spotting common animal phyla specimen for spotting staining solution safranin methylene blue aceto carmine thermometer stethoscope glycerine ph pper litmus paper red litmus paper blue filter paper
  • View Tender
  • Document
  • Bid Support
10 Power
image image
Central Government And Public Sector
TRN :36081790 |  31 Dec, 2025
Tender Value : 5.02 Lacs
 Chamba - Himachal Pradesh
Tender for gem bids for spares, 16a ammeter selector switch for main inputcurrent selection, 16a voltmeter selector switchfor main input voltage selection, 10a tp ac 2 waywithout off auto or manual mode selection forfloat and boost chargers, 16a sp dc 2 way withoutoff switch for float rectifier or load bus andboost rectifier or battery voltage selector switch, 16a sp ac 2 way without off auto c or o mode ormanual boost mode selection for charger, 10a tpdc 2 way without off for boost charging ofbattery set 1 or 2 selection, 225a dc coil operatedemergency contactor coil 220v dc auxi 1no, 185adc coil operated contactor for boost chargingbattery set 1 coil 220v dc auxi 2 nc, 63a dp dc on oroff switch for load isolation, 40a dc coiloperated emergency contactor coil 48v dc auxi1no, 65a dc coil operated contactor for boostcharging battery set 1 coil 48v dc auxi 1 nc, filtercapacitor for ripple suppression for float andboost chargers rating 100 v 2200 uf, dc to dcconvertor 48v dc to 24 v dc 5 amps, 4 channelrelay boards for contact multiplication of cardmounted protection relays, electronic cardmodule for avr and current limit for float chargerauto and manual mode, electronic card module foravr and current limit for boost charger auto andmanual mode, electronic card module for floatand boost rectifier fuse fail and filter fuse fail, protection module for various fault detection andannunciation, blocking diode for float and boostcharger rating 70a i avg piv 800 for fcb mode on k3heat sink, 80 percent blocking diode stud typerating 70a i avg piv 800 on k3 heat sink, latchingresistor for rectifier. 250 ohms 50 watts for floatand boost chargers, 10k 1w potentiometer forauto or manual voltage adjust in float charger, 10k 1w potentiometer for auto or manual currentadjust in boost charger, 2ph control transformerfor power supply of avr cards prim 415 v sec 16 0 16v ac 400ma, 3ph control transformer forsynchronising of avr cards. pri 415 v sec 16 0 1650ma, 3ph control transformer for ac u or v pri415 v 3 phase sec 0 16 vac 1 phase 250 ma, 2 0ficontrol transformer for fan control supply prim415 v 2 phase sec 190v ac 50va, scr stud type 70awith heatsink loose module only, diode freewheeling stud type 70a with heatsink loose moduleonly, digital ac ammeter 48 x 96 sq mm class 1 ctratio 25 or 1a auxiliary voltage 24v dc, digital acvoltmeter 48 x 96 sq.mm class 1 range 0 500v acauxiliary voltage 24v dc, digital dc ammeter forfloat boost chargers and 80percentage cell tap 48 x96 sq mm class 1 75mv dc with shunt auxiliaryvoltage 24v dc, digital dc voltmeter 48 x 96 sqmmclass 1 range 75mv dc auxiliary voltage 24v dc, digital dc charge or discharge ammeter for battery48 x 96 sq mm class 1 range 75mv with shunt auxi24v dc, transportation charges for material
  • View Tender
  • Document
  • Bid Support
  • 1
  • 2
  • Tenders Expired In - 2025
  • Tenders Expired In - 2024
  • Tenders Expired In - 2023
  • Tenders Expired In - 2022
  • Tenders Expired In - 2021
  • Tenders Expired In - 2020
  • Tenders Expired In - 2019
  • Tenders Expired In - 2018
  • Tenders Expired In - 2017
  • Tenders Expired In - 2016
  • Tenders Expired In - 2015
Related Searched Keywords : digital voltmeter
  • Holographic Meter Tenders ,
  • Electrical Meter Scrap Tenders ,
  • Electrical Energy Meter Tenders ,
  • Pvc Meter Tenders ,
  • Ohm Meter Tenders ,
  • Transfer Metering Machine Tenders ,
  • Sound Meter Tenders ,
  • Abt Meter Tenders ,
  • Metering Scrap Tenders ,
  • Split Prepayment Static Meter Tenders

Get digital voltmeter Tender Alert...

475091

Related Searched Keywords : digital voltmeter

  • Drilling Tenders From Maharashtra
  • Building Tenders From Delhi
  • False Ceiling Tenders From West-Bengal
  • Finishing Work Tenders From -Tamil-Nadu
  • Roofing Work Tenders From Andhra-Pradesh
  • Civil Engineering Service Tenders From Gujarat
  • False Celling Tenders From Karnataka
  • Wall Fencing Tenders From Uttar-Pradesh
  • Flooring Item Tenders From Rajasthan
  • Infrastructural Works Tenders From Madhya-Pradesh

Read More


Tender Document

103661

State Tenders »

  • Maharashtra Tenders
  • Delhi Tenders
  • West Bengal Tenders
  • Tamil Nadu Tenders
  • Andhra Pradesh Tenders

City Tenders »

  • Hyderabad Tenders
  • Visakhapatnam Tenders
  • Guwahati Tenders
  • Patna Tenders
  • Chandigarh Ut Tenders

Keyword Tenders »

  • Infrastructural Works Tenders
  • Railway Under Bridge Tenders
  • Rcc Pile Foundation Tenders
  • Railway Bridge Tenders
  • Earth Works Tenders

Sector Tenders »

  • Drugs And Pharmaceuticals Tenders
  • Survey Work Tenders
  • Shipping Transport Tenders
  • Scientific Research And Instruments Tenders
  • Security Services Tenders

Ownership Tenders »

  • Central Government And Public Sector Tenders
  • Co Operative Tenders
  • Corporations And Associations And Others Tenders
  • Private Sector Tenders
  • State Government Tenders

Indian Segment

  • State Tenders
  • City Tenders
  • Industry Tenders
  • SubIndustry Tenders
  • Sector Tenders
  • Ownership Tenders
  • Agency Tenders
  • Keyword Tenders
  • Source of Tenders

Browse Tenders

  • RFP-RFQ Tenders
  • Vender Registration Tenders
  • ICB Tenders
  • NCB Tenders
  • Auction Tenders
  • Corrigendum Tenders
  • E Procurement Tenders
  • GeM Tenders (Registration)

Global Segment

  • Middle East Countries Tenders
  • European Countries Tenders
  • African Countries Tenders
  • Asian Countries Tenders
  • Saar Countries Tenders
  • Australia Oceania Countries Tenders
  • South America Countries Tenders
  • North America Countries Tenders

Others

  • Services
  • Sitemap
  • About Us
  • Contact Us
  • Career
  • Tender Consultants
  • Terms & Conditions
  • Privacy & Policy

Get in touch with us

  • +91-92760 83333 (In India)
    +91-92743 15555 (South India)

  • sales@thetenders.com

W B


Copyright ©2018 - Thetenders.com.

Download Mobile App