Sign in
logo
GAIN EXPRESS HOLDINGS LIMITED
{0} years
Hong Kong S.A.R.
Main categories: industrial Endoscope,PH meter,Refractometer,Fish Finder,Lux Meter
Top picks
View more
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 Automotive Fuel Pressure Injection Pump Injector Tester 12V Car Vehicle Diagnostic Tool 4 Modes
$18.80 - $21.21
Min. Order: 1 piece
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
NEW ARRIVALS
Air Quality Meters
Automotive Testing Equipment
Water Quality Meters
Professional Thickness Gauge Ultrasonic Thickness Meter Datalogger 1.0~300.0mm (0.03~11.8inches) Record 1500 Data Colored Screen
$52.94 - $58.82
Min. Order: 5 pieces
Digital Sound Level Meter, Decibel Tester 30-130dB (A), 35-130dB (C), 31,000 Data Records for Home, Office, Factory, Traffic
$16.78 - $18.93
Min. Order: 5 pieces
3-in-1 Laser Level with Red Laser Home Electric Drilling Dust Collector & Wall Mount Bracket 2M Distance Bubble Level DIY Pros
$19.53 - $22.05
Min. Order: 5 pieces
3-in-1 Digital Soil Moisture, pH, Acidity/Alkalinity & Temperature Tester for Agriculture, Garden, Seedbed, Orchard Soil Testing
$17.44 - $19.69
Min. Order: 5 pieces
Wallmounted Digital Sound Level Meter Decibel Noise 30~130dB Range Colored Display Temperature Humidity for Office Home Hospital
$25.64 - $28.93
Min. Order: 5 pieces
Halogen Gas Leak Detector, 10.5" Gooseneck, Anti-slip, High Sensitivity, Triple Alarm, Waterproof & Dustproof for Car Repair
$21.18 - $23.91
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
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 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
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
CO2 Controller Carbon Dioxide Controller C02 Meter Monitor with Relay Function 4.5m Cable NDIR Sensor for Grow Plant Greenhouse
$90.00 - $107.90
Min. Order: 1 piece
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
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
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
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
Online PH/EC Conductivity Monitor Meter Tester ATC, Wall Mountable & Rechargeable, Water Quality Real-time Continuous Monitoring
$20.70 - $23.36
Min. Order: 1 piece
Digital pH Controller Dual Relay UP and DOWN Adjustable Dosing 2-Point Automatic Calibration Ideal for Aquariums and Hydroponics
$157.91 - $175.30
Min. Order: 1 piece