Gain Express

@UC254h3YX4zLsQFX9Ew1PmSA - 3.8K subscribers

Gain Express is a Hong Kong-based manufacturing and trading company established in 2003 that offers a wide range of electronic products and testing instruments. We have years of trading experience (B2B / B2C) with customers from North America, South America, Asia, Australia / Oceania, Europe, Africa, the Middle East and so on. Some of our products have passed European CE certification and ISO9001 quality management system certification. Get high quality but affordable tools from us!

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WQM-339 7in1 Pentype Tester PH / TDS / EC / ORP / Salinity / S.G. / Temperature Meter Water Tester

WQM-339 7in1 Pentype Tester PH / TDS / EC / ORP / Salinity / S.G. / Temperature Meter Water Tester Gain Express

314 views - 10 months ago

VAR-378 Magnetic Mini Voice-Activated Recorder | 64GB, 30-Hour Battery & MP3 Playback

VAR-378 Magnetic Mini Voice-Activated Recorder | 64GB, 30-Hour Battery & MP3 Playback Gain Express

143 views - 10 months ago

SLM-336 Smart Decibel Meter | Real-Time Noise, Temperature & Humidity Monitoring

SLM-336 Smart Decibel Meter | Real-Time Noise, Temperature & Humidity Monitoring Gain Express

146 views - 10 months ago

PHC-342 Smart pH & ORP Controller with Remote App Alerts & Wi-Fi Monitoring

PHC-342 Smart pH & ORP Controller with Remote App Alerts & Wi-Fi Monitoring Gain Express

517 views - 11 months ago

VAR-412 Compact 1080p Body Cam with Rotating Lens, Night Vision & Motion Detection

VAR-412 Compact 1080p Body Cam with Rotating Lens, Night Vision & Motion Detection Gain Express

100 views - 11 months ago

LUX-426 Split-Probe Digital Lux Meter with Temp Sensor & Bluetooth App

LUX-426 Split-Probe Digital Lux Meter with Temp Sensor & Bluetooth App Gain Express

43 views - 11 months ago

AQM-434 4-in-1 Gas Leak Detector | Instant Alerts for EX, CO, H₂S & O₂

AQM-434 4-in-1 Gas Leak Detector | Instant Alerts for EX, CO, H₂S & O₂ Gain Express

62 views - 11 months ago

TM-214 Window Tint Meter – 0–100% VLT, 4000 Measurements, Portable & Rechargeable

TM-214 Window Tint Meter – 0–100% VLT, 4000 Measurements, Portable & Rechargeable Gain Express

165 views - 11 months ago

GEM-522 10X Magnifying Loupe – Dual LED & UV Light, Rechargeable Scale Magnifier

GEM-522 10X Magnifying Loupe – Dual LED & UV Light, Rechargeable Scale Magnifier Gain Express

261 views - 11 months ago

88594 GLP-Compliant K-Type Thermocouple Data Logger – High-Accuracy Temperature Monitoring

88594 GLP-Compliant K-Type Thermocouple Data Logger – High-Accuracy Temperature Monitoring Gain Express

100 views - 11 months ago

PHC-402 Dual Relay Digital pH Controller | Auto Dosing with Temp Compensation

PHC-402 Dual Relay Digital pH Controller | Auto Dosing with Temp Compensation Gain Express

342 views - 11 months ago

SQM-416 Waterproof Soil EC & Temperature Meter | Accurate EC, ATC & IP67

SQM-416 Waterproof Soil EC & Temperature Meter | Accurate EC, ATC & IP67 Gain Express

9 views - 11 months ago

SQM-457 8-in-1 Soil Meter | PH, EC, Moisture, Humidity

SQM-457 8-in-1 Soil Meter | PH, EC, Moisture, Humidity Gain Express

124 views - 11 months ago

STD-439R 3-in-1 Drill Dust Collector & Laser Level Bracket

STD-439R 3-in-1 Drill Dust Collector & Laser Level Bracket Gain Express

103 views - 11 months ago

KC-318 Pinless Moisture Meter | Non-Invasive & Accurate

KC-318 Pinless Moisture Meter | Non-Invasive & Accurate Gain Express

141 views - 11 months ago

GEM-462 Dual Magnification Loupe 10× / 25× | Precision Jewelry & Coin Inspection Tool

GEM-462 Dual Magnification Loupe 10× / 25× | Precision Jewelry & Coin Inspection Tool Gain Express

17 views - 11 months ago

WQM-448 3-in-1 Waterproof pH | EC | Temp Tester | Portable Water, Food & Soil Quality Meter

WQM-448 3-in-1 Waterproof pH | EC | Temp Tester | Portable Water, Food & Soil Quality Meter Gain Express

8 views - 11 months ago

LUX-485 Bluetooth Light Lux Meter | Wireless Illuminance Sensor with Data Logging

LUX-485 Bluetooth Light Lux Meter | Wireless Illuminance Sensor with Data Logging Gain Express

210 views - 11 months ago

PHC-493 Smart pH / EC / Temp Meter | Online Water Quality Controller

PHC-493 Smart pH / EC / Temp Meter | Online Water Quality Controller Gain Express

167 views - 11 months ago

THE-418 Digital K-Type Thermocouple Thermometer | High & Low Temp Probe

THE-418 Digital K-Type Thermocouple Thermometer | High & Low Temp Probe Gain Express

101 views - 11 months ago

BFT-505 Brake Fluid Tester | Digital Brake Fluid Detector for DOT3, DOT4, DOT5.1

BFT-505 Brake Fluid Tester | Digital Brake Fluid Detector for DOT3, DOT4, DOT5.1 Gain Express

48 views - 11 months ago

EMF-506 Digital Gauss Meter | High-Precision Magnetic Field Detector

EMF-506 Digital Gauss Meter | High-Precision Magnetic Field Detector Gain Express

70 views - 11 months ago

$RES-28ATC: Precision Salinity Refractometer for Food & Aquatic Applications$ 0:35

RES-28ATC: Precision Salinity Refractometer for Food & Aquatic Applications Gain Express

63 views - 11 months ago

GEM-395: High-Quality 20x Magnification Jewelry Loupe with Optical Glass Triplet Lens

GEM-395: High-Quality 20x Magnification Jewelry Loupe with Optical Glass Triplet Lens Gain Express

59 views - 11 months ago

PHM-443: High-Accuracy Digital pH & Temperature Meter with Color LCD

PHM-443: High-Accuracy Digital pH & Temperature Meter with Color LCD Gain Express

46 views - 11 months ago

CTM-407: Dual-Mode Paint Thickness Meter for Fe/NFe Surfaces

CTM-407: Dual-Mode Paint Thickness Meter for Fe/NFe Surfaces Gain Express

11 views - 11 months ago

THE-518: Wireless Solar Pool Thermometer with RGB Display & Comfort Alerts

THE-518: Wireless Solar Pool Thermometer with RGB Display & Comfort Alerts Gain Express

42 views - 11 months ago

$REC-200ATC: Precision Clinical Refractometer for Serum, Urine & RI Testing$ 0:40

REC-200ATC: Precision Clinical Refractometer for Serum, Urine & RI Testing Gain Express

196 views - 11 months ago

PCM‑282 Smart Power & Energy Consumption Monitor

PCM‑282 Smart Power & Energy Consumption Monitor Gain Express

25 views - 11 months ago

WTM-404 Portable Tint Meter | Measure Visible Light, UV & IR Transmittance in Seconds

WTM-404 Portable Tint Meter | Measure Visible Light, UV & IR Transmittance in Seconds Gain Express

47 views - 11 months ago

WQM-504 Smart Aquarium Water Quality Monitor | 7-in-1 Real-Time Water Tester with WiFi Alerts

WQM-504 Smart Aquarium Water Quality Monitor | 7-in-1 Real-Time Water Tester with WiFi Alerts Gain Express

195 views - 11 months ago

WQM-408 6-in-1 Water Quality Tester | TOC, UV275, EC, TDS, COD & Temp

WQM-408 6-in-1 Water Quality Tester | TOC, UV275, EC, TDS, COD & Temp Gain Express

90 views - 11 months ago

THE-494 Mobile Infrared Thermal Imager | Smart Thermal Imaging & Temperature Measurement

THE-494 Mobile Infrared Thermal Imager | Smart Thermal Imaging & Temperature Measurement Gain Express

22 views - 11 months ago

PCM-340 Socket Tester | GFCI & 3-Wire Outlet Voltage & Leakage Detector

PCM-340 Socket Tester | GFCI & 3-Wire Outlet Voltage & Leakage Detector Gain Express

17 views - 11 months ago

LKD‑431 Halogen Gas Leak Detector | High-Sensitivity Portable Leak Tester

LKD‑431 Halogen Gas Leak Detector | High-Sensitivity Portable Leak Tester Gain Express

64 views - 11 months ago

GEM‑463 Darkfield Loupe Polariscope | 10× LED Gemstone Identifier

GEM‑463 Darkfield Loupe Polariscope | 10× LED Gemstone Identifier Gain Express

87 views - 11 months ago

GEM‑460 LED Gemstone Polariscope | Dual‑Lens Field Gem Tester

GEM‑460 LED Gemstone Polariscope | Dual‑Lens Field Gem Tester Gain Express

253 views - 11 months ago

EMF‑456 Gauss Meter | Portable Magnetic Field Tester with Data Logging

EMF‑456 Gauss Meter | Portable Magnetic Field Tester with Data Logging Gain Express

390 views - 11 months ago

E‑314 pH Electrode Kit | 0–14 pH BNC Probe with Calibration Powders

E‑314 pH Electrode Kit | 0–14 pH BNC Probe with Calibration Powders Gain Express

47 views - 11 months ago

DOM‑383 Rechargeable Dissolved Oxygen & Temperature Meter | Pen‑Type DO Tester with ATC

DOM‑383 Rechargeable Dissolved Oxygen & Temperature Meter | Pen‑Type DO Tester with ATC Gain Express

30 views - 11 months ago

CLMG-7209 Foldaway Dichroscope | Portable Gemstone Pleochroism Tester

CLMG-7209 Foldaway Dichroscope | Portable Gemstone Pleochroism Tester Gain Express

15 views - 11 months ago

510-160 Digital Body Fat Caliper for Home Fitness

510-160 Digital Body Fat Caliper for Home Fitness Gain Express

773 views - 11 months ago

TAC-401 2‑in‑1 Tachometer (Contact & Non‑Contact RPM Meter)

TAC-401 2‑in‑1 Tachometer (Contact & Non‑Contact RPM Meter) Gain Express

581 views - 11 months ago

SLM‑413 Wall‑Mounted/Desktop Sound Level Meter, 13″ Colored LCD, Temp & Humidity Display

SLM‑413 Wall‑Mounted/Desktop Sound Level Meter, 13″ Colored LCD, Temp & Humidity Display Gain Express

281 views - 11 months ago

SLM‑389 Wall Hanging Sound Level Meter, 13" HD Display, Data Logging, Audio/Visual Alarm

SLM‑389 Wall Hanging Sound Level Meter, 13" HD Display, Data Logging, Audio/Visual Alarm Gain Express

410 views - 11 months ago

PAR‑499 Digital PAR DLI Meter, USB Data Logger for Growers, Measures PAR & Daily Light Integral

PAR‑499 Digital PAR DLI Meter, USB Data Logger for Growers, Measures PAR & Daily Light Integral Gain Express

115 views - 11 months ago

PAR-414 Full-Spectrum Quantum PAR Meter Waterproof Sensor IP68 for Reef Tank Plants PPFD Tester

PAR-414 Full-Spectrum Quantum PAR Meter Waterproof Sensor IP68 for Reef Tank Plants PPFD Tester Gain Express

319 views - 11 months ago

MAN‑420 Digital Differential Pressure Manometer | ±50 kPa, USB Data Logging & 13 Units

MAN‑420 Digital Differential Pressure Manometer | ±50 kPa, USB Data Logging & 13 Units Gain Express

502 views - 11 months ago

LUX‑331 Lux / Footcandle Illuminance Meter, 0.1‑200,000 Lux High‑Accuracy Light Tester

LUX‑331 Lux / Footcandle Illuminance Meter, 0.1‑200,000 Lux High‑Accuracy Light Tester Gain Express

69 views - 11 months ago

LKD‑398 Natural Gas Leak Detector, High Sensitivity Combustible Gas Sniffer with Gooseneck Probe

LKD‑398 Natural Gas Leak Detector, High Sensitivity Combustible Gas Sniffer with Gooseneck Probe Gain Express

54 views - 11 months ago

HTM‑483 Thermo‑Hygrometer , Portable Temp & Humidity Meter — High Precision, Backlight

HTM‑483 Thermo‑Hygrometer , Portable Temp & Humidity Meter — High Precision, Backlight Gain Express

36 views - 11 months ago

HTM‑482 Thermo‑Hygrometer, Data‑Logging Temp, Humidity, Wet Bulb & Dew Point Meter

HTM‑482 Thermo‑Hygrometer, Data‑Logging Temp, Humidity, Wet Bulb & Dew Point Meter Gain Express

29 views - 11 months ago

GEM‑450 Jeweler Loupe, 10x–40x Rechargeable Triplet Lens with LED & UV Lighting

GEM‑450 Jeweler Loupe, 10x–40x Rechargeable Triplet Lens with LED & UV Lighting Gain Express

412 views - 11 months ago

AQM-481 Air Quality Monitor , Real-Time PM2.5, PM10, CO2, Temp & Humidity Tracking

AQM-481 Air Quality Monitor , Real-Time PM2.5, PM10, CO2, Temp & Humidity Tracking Gain Express

62 views - 11 months ago

AQM-353 Smart WiFi CO₂ Detector, Real-Time Monitoring for Grow Rooms, Bedrooms & Wine Cellars

AQM-353 Smart WiFi CO₂ Detector, Real-Time Monitoring for Grow Rooms, Bedrooms & Wine Cellars Gain Express

15 views - 11 months ago

AQM‑356 CO₂ Controller & Monitor. Auto Day/Night Detection with 15ft Remote NDIR Sensor

AQM‑356 CO₂ Controller & Monitor. Auto Day/Night Detection with 15ft Remote NDIR Sensor Gain Express

25 views - 11 months ago

AQM‑374 Portable Hydrogen Sulfide (H₂S) Gas Detector , Records 1500 Events with Multi‑Alarm Alerts

AQM‑374 Portable Hydrogen Sulfide (H₂S) Gas Detector , Records 1500 Events with Multi‑Alarm Alerts Gain Express

59 views - 11 months ago

AQM‑384 Portable 4-in‑1 Gas Detector, CO, H₂S, O₂ & EX (LEL) Safety Monitor

AQM‑384 Portable 4-in‑1 Gas Detector, CO, H₂S, O₂ & EX (LEL) Safety Monitor Gain Express

62 views - 11 months ago

AQM‑514 Portable Radon Gas Detector, Real-Time Radon Monitoring, Home & Workplace Safety

AQM‑514 Portable Radon Gas Detector, Real-Time Radon Monitoring, Home & Workplace Safety Gain Express

32 views - 11 months ago

EMF‑427 Solar Power Meter, Sunlight & Solar Radiation Tester (W/m² & BTU)

EMF‑427 Solar Power Meter, Sunlight & Solar Radiation Tester (W/m² & BTU) Gain Express

161 views - 11 months ago