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GAIN EXPRESS HOLDINGS LIMITED
HK
12YRS
Main categories: industrial Endoscope,PH meter,Refractometer,Fish Finder,Lux Meter
Top picks

Product categories

300cm long Cable ORP Electrode for ORP Meter Tester Controller (OEM packaging available)
$17.16 - $19.37
(Min. Order) 1 set
20x Magnification 20.5mm Jeweler Gem Loupe Triplet Lens Jewelry Optical Hobbyist Stamp & Coin (OEM Packaging Available)
$6.14 - $7.39
(Min. Order) 2 sets
3-in-1 Automotive Antifreeze Refractometer 1.100 - 1.400kg/l System Coolant Freezing Point (OEM Packaging Available)
$9.05 - $10.88
(Min. Order) 1 set
Gloss Surface Meter 0.1-200 GU Tester Meter 20deg 45deg 75deg for Ceramics Films Textiles Rechargeable Reflectometer Triple
$216.87 - $227.85
(Min. Order) 1 piece
3-in-1 Digital EC / CF / TDS Meter Combo Water Quality Tester IP65 Waterproof Conductivity with ATC (OEM packaging available)
$20.65 - $23.30
(Min. Order) 1 set
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
23 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
CO2 Carbon Dioxide Monitor & Controller (Relay Function) w/ Remote Sensor for Home, Office, Hospital (OEM Packaging Available)
$93.90 - $108.90
(Min. Order) 1 piece
5 orders
Measuring Instruments
All products
Measuring Instruments
Customizable
Ready to Ship
Quantum PAR Meter Photo Synthetically Active Radiation PPFD Tester for Plant Lighting Horticulture of Indoor & Outdoor Plants
$75.85 - $85.90
Shipping: $28.00/piece
Min. Order: 1 piece
1 sold
Add to cart
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
Shipping: $31.80/piece
Min. Order: 1 piece
31 sold
Add to cart
Smart Meat Food Thermometer W/ Bluetooth Function 98.42Ft. Range, Vibrating Alarm, IP67 Grade for Oven, Grill, Kitchen, BBQ
$26.25 - $29.62
Shipping: $14.00/piece
Min. Order: 2 pieces
Add to cart
Smart Sound Level Tester 30dB to 130dB Decibel Meter Colored LED Screen Display Temperature Humidity Measurement
$26.20 - $29.57
Shipping: $31.80/piece
Min. Order: 1 piece
Add to cart
Data Logger Thermo-hygrometer Thermometer Temperature and Humidity Datalogging Measurement w/ PC Software and Calendar Display
$29.56 - $33.36
Shipping: $8.88/piece
Min. Order: 5 pieces
Add to cart
Dual Channel Thermocouple Thermometer K/J Probes Temperature Measurement Wired & Stainless Steel Home Appliances To Industrial
$14.70 - $16.59
Shipping: $7.46/piece
Min. Order: 5 pieces
Add to cart
Stud Finder Wall Scanner Metal Cable Wooden Detection With Positioning Hole Rechargeable Battery Type-C Port 3-color Indicator
$27.68 - $31.24
Shipping: $7.46/piece
Min. Order: 5 pieces
Add to cart
Wifi Smart Combustible Gas Leak Detectors Loud & LED Alarm App Control For Natural Gas, LPG, Coal, Methane, Propane Etc
$13.91 - $15.70
Shipping: $7.46/piece
Min. Order: 5 pieces
Add to cart
AQM-338 Portable Tester Hydrogen Sulfide Detector H2S Monitor 0~100ppm Electrochemical H2S Sensor with LCD Screen Backlight
$30.02 - $33.88
Shipping: $14.95/piece
Min. Order: 5 pieces
Add to cart
Waterproof Soil EC and Temperature Meter Digital Tester with ATC for Potted Plants Gardening Agriculture Farm
$21.80
Shipping to be negotiated
Min. Order: 5 pieces
Portable 4-in-1 Multi Gas Leak Detector Monitor H2S/O2/CO/ Ex (LEL) IP65 Rechargeable Lithium Battery Gas Analyzer
$66.94 - $74.38
Shipping: $13.74/piece
Min. Order: 5 pieces
Add to cart
Decibel Meter Digital Sound Level Meter Datalogger 30~130dB Range A / C / Z Weighted For Home, Factory, Noisy Neighbor
$31.26 - $35.28
Shipping: $14.95/piece
Min. Order: 5 pieces
Add to cart
Radiation Detector Dosimeter Geiger Counter Beta Gamma X-ray Rechargeable Radioactive Monitor Tester Switchable 5 Dosage Units
$34.30 - $38.11
Shipping: $10.14/piece
Min. Order: 5 pieces
Add to cart
Digital Lux Meter Light Tester Sensor Wireless Luxmeter Photometer Luminometer Footcandle Illuminance for School, Lab, Factory
$9.80 - $11.79
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
Magnetic Mini Voice Activated Recorder 64GB Recording Device with Speaker 192kbps Sound Quality Long-Lasting Battery for Car Lec
$17.19
Shipping to be negotiated
Min. Order: 30 pieces
Non-Destructive Digital Moisture Meter Colored LCD Screen Pinless Wood Moisture Tester for Drywall / Masonry / Softwood / Hardwo
$18.57 - $20.96
Shipping: $8.88/piece
Min. Order: 5 pieces
Add to cart
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