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GAIN EXPRESS HOLDINGS LIMITED
{0} years
Hong Kong S.A.R.
Main categories: industrial Endoscope,PH meter,Refractometer,Fish Finder,Lux Meter
Top picks
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Greenhouse CO2 Controller w/ 4.5 Meters Remote CO2 Sensor Auto Detect Day Night Function Perfect for Grow Rooms, Home, Offices
$93.90 - $108.90
Min. Order: 1 set
9 orders
Diamond Moissanite Tester Gemstone 2pt Jewel Stone Combo Gem Test Jewelry Identifier Tool Equipment
$73.75 - $81.94
Min. Order: 2 pieces
7 orders
Digital CO2 IAQ Monitor Controller 45M Cable NDIR Sensing Probe w/ Relay Function Green House Home, Office, Factory
$93.90 - $108.90
Min. Order: 1 piece
LUCKY FF918-CWLS Color Display Bait Boat Fish Finder with 300m/980ft Wireless Operating Range(OEM Packaging Available)
$99.45 - $115.90
Min. Order: 1 set
5 orders
Handheld Par Meter PPFD Tester Up to 3999umol/(m2s) Measurement For for Green House and Led Grow Lights (OEM Packaging Available
$75.85 - $85.90
Min. Order: 1 set
Digital PAR Meter Full-Spectrum Quantum PPFD Tester for Plant Photosynthetic Activity Measurement(OEM Packaging Available)
$57.83 - $64.25
Min. Order: 5 pieces
7 orders
Thermocouple Thermometer K/J Datalogger 4-Channel Display With Real Time Data Logging Visible Alarm & ADJ Compensation
$37.49 - $41.65
Min. Order: 5 pieces
7 orders
Digital pH Controller Dual Relay Output Temperature Compensation Adjustable pH 4.5-8.5 Ideal Aquariums Hydroponics Indoor Plant
$157.91 - $175.30
Min. Order: 1 piece
High Accuracy Measuring 30dB-130dB with Data Record Function Sound Level Meter with Backlit Display Compact Professional
$24.05 - $27.14
Min. Order: 5 pieces
Handheld MOISSANITE TESTER Portable Moissanite Tester /Selector + Tester UV Light 2pt Jewel Stone Tool Selector
$28.48 - $32.14
Min. Order: 1 piece
NEW ARRIVALS
Air Quality Meters
Automotive Testing Equipment
Water Quality Meters
Sound Level Meter Datalogger Noise Tester 43,000 Record Capacity Visual Alarm PC Link Color Screen for Home School Noise Monitor
$22.89 - $25.83
Min. Order: 5 pieces
Grain Moisture Meter Water Content Analyzer with 11.81" Metal Probe for 14 Grains Wheat Corn Rice Peanut Soybean
$10.11 - $12.16
Min. Order: 5 pieces
10X Magnification Loupe 6 LED & UV Light Triplet 22mm Optic Lens Rechargeable Jewelry Tool for Collectors Gemologists Jewelers
$9.87 - $11.87
Min. Order: 5 pieces
30X Jeweler Loupe 6 LED & UV Light 22mm Optic Lens Rechargeable Magnifier for Collectors Gemologists Jewelers Relic Enthusiasts
$10.56 - $12.70
Min. Order: 5 pieces
20X Jeweler Loupe with 6 LED & UV Light 22mm Optic Lens Rechargeable Magnifier Tool for Collectors Gemologists Jewelers Relics
$10.42 - $12.54
Min. Order: 5 pieces
Rechargeable 40X Magnification Loupe with 6 LED & UV Light, 22mm Triplet Optic Lens Ideal for Jewelers, Gemologists & Collectors
$10.90 - $13.12
Min. Order: 5 pieces
Digital CO2 Controller Greenhouse CO2 Sensor 4.5m Remote Automatic Day-Night Detection Functionality Grow Rooms Homes Offices
$93.90 - $108.90
Min. Order: 1 set
Digital CO2 IAQ Monitor Controller 45M Cable NDIR Sensing Probe w/ Relay Function Green House Home, Office, Factory
$93.90 - $108.90
Min. Order: 1 piece
Digital Waterproof USB Datalogger Humidity Temperature Pressure Barometric Data Logger PDF Excel Report LED indicator
$43.73 - $48.58
Min. Order: 5 pieces
5 in 1 Air Quality Monitor Carbon Monoxide CO Carbon Dioxide CO2 TVOC Humidity and Temperature Detector NDIR Sensor Office Home
$26.59 - $30.01
Min. Order: 1 piece
CO2 Meter Detector w/ NDIR Sensor Air Quality Monitoring 9-in-1 Portable Tester CO2, PM2.5/10, HCHO, TVOC, AQI, Temperature
$86.18 - $95.50
Min. Order: 5 pieces
CO2 Controller Carbon Dioxide Control CO2 Meter Monitor Day and Night Relay Function NDIR C02 Sensor for Green House Grow Rooms
$90.00 - $107.90
Min. Order: 1 piece
2-in-1 Tachometer Digital Non-contact & Contact Laser Photo Sensor Real-Time Measurement for Electric Power, Petrachemical, Etc
$16.08 - $18.15
Min. Order: 5 pieces
2-in-1 Digital Contact & Non-contact Tachometer | Laser Photo | 2.5~99,999 RPM | Auto-Ranging, LSI Circuit & Crystal Time Base
$21.65 - $24.43
Min. Order: 1 piece
2-in-1 Digital Tachometer Photo & Contact RPM 2.5 ~ 99,999 r/min Laser Range Accurate Speed Tester for Machinery Fan Automobile
$68.75 - $76.39
Min. Order: 5 pieces
Shore D Hardness Meter Tester Automotive Thickness Gauge 0~100HD Range Rubber Plastics High Quality LCD Self Calibrated
$16.64 - $18.78
Min. Order: 5 pieces
Mitech MH600 Portable Leeb Hardness Meter 6 Impact Devices IP65 Metal 170~960HLD Chinese-English Metallic with Carrying Case
$759.30 - $898.00
Min. Order: 1 piece
Automotive Noise Vibration Finder Electronic Stethoscope Battery Powered High Sensitivity Long Short Probe 100Hz~10kHz Range
$31.63 - $35.70
Min. Order: 1 piece
GAINEXPRESS 8-in-1 Water Test Kit pH. ORP. EC Conductivity, TDS, Salt, S.G., CF, and Temperature with Online APP Tester
$43.12 - $47.92
Min. Order: 5 pieces
Pen-Type pH Meter Water Quality Tester with Backlight Digital and Portable
$2.96 - $3.56
Min. Order: 1 piece
TDS / EC Meter 2-in-1 Pentype Digital Water Quality Tester with ATC Temperature Measurement for Water Analysis Hydroponics
$4.50
Min. Order: 20 pieces
pH Meter Digital 6 IN 1 Floating Monitor EC / Salinity / pH / ORP / Temperature / Chlorine Smart Meter Tester With Bluetooth
$29.50 - $33.29
Min. Order: 5 pieces
6in1 Water Quality Testing Meter TOC UV275 EC TDS COD Temperature Tester Intelligent Scoring Mode Colored Backlight Indicator
$27.15 - $30.64
Min. Order: 5 pieces
Online PH & EC Conductivity Monitor Meter Tester ATC, Water Quality Real-time Continuous Monitoring, Aquarium, Pond, Hydroponic
$21.05 - $23.76
Min. Order: 1 piece