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GAIN EXPRESS HOLDINGS LIMITED
HK
12
YRS
Main categories: industrial Endoscope,PH meter,Refractometer,Fish Finder,Lux Meter
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Product categories
NEW ARRIVALS
Air Quality Meters
Automotive Testing Equipment
Water Quality Meters
Fishing Tackles/Gears
Dental Loupe
Gemological Instruments / Jeweler Tools
Health, Fitness & Sports
Inspection Cameras / Endoscopes / Borescopes
Microscopes / Ring Lights / Illuminators
Multimeters / Clamp Meters
Measuring Instruments
OEM Products
Ozone Generator
Refractometers
Tension Tester
Water Level Alarm
Weather Station
Ungrouped
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
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All-in-1 Accurate Mountable Indoor Air Quality Monitor, Real-time CO2 & Temperature & Humidity Level with Visual & Alarm
$120.73 - $133.78
Shipping: $16.14/piece
Min. Order: 5 pieces
Add to cart
Indoor Air Quality Monitor All-in-1 CO2 & Temperature & Humidity Level Meter Mountable w/ NDIR Sensor (OEM Packaging Available)
$120.73 - $133.78
Shipping: $16.14/set
Min. Order: 5 sets
Add to cart
Wall Mountable CO2 Detector w/ Alarm 0~9999ppm Range Carbon Dioxide Monitor Meter RH Indoor Air Quality IAQ Sensor
$97.02 - $107.51
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
3-in-1 CO2 Carbon Dioxide Sensor Desktop Indoor Air Quality Data logger Humidity RH Monitor (OEM Packaging Available)
$83.00
Shipping to be negotiated
Min. Order: 50 sets
Multi-function CO2 PM2.5 Air quality detector Temperature Humidity monitor (OEM Packaging Available)
$48.89 - $65.43
Shipping to be negotiated
Min. Order: 100 pieces
CO2 Carbon Dioxide Monitor & Controller (Relay Function) w/ Remote Sensor for Home, Office, Hospital (OEM Packaging Available)
$93.90 - $108.90
Shipping to be negotiated
Min. Order: 1 piece
5 orders
0~9999ppm Range Wall Mount Indoor Air Quality Monitor CO2 Meter Temperature RH Carbon Dioxide Tester (OEM Packaging Available)
$97.02 - $107.51
Shipping: $28.00/set
Min. Order: 1 set
Add to cart
Smart Air Detector Analyzer Air Quality Monitor CO2 Meter, TVOC, Humidity, Temperature, PM2.5, PM1.0 W/ Relay Output APP Control
$79.27 - $87.84
Shipping: $19.89/piece
Min. Order: 5 pieces
Add to cart
Digital Air Quality Monitor Detector Thermometer Hygrometer PM2.5/1.0/10 HCHO/TVOC/Temp./Humidity/CO2 (OEM Packaging Available)
$63.86 - $75.31
Shipping to be negotiated
Min. Order: 100 sets
Digital Air Quality Monitor Detector PM2.5/PM1.0/PM10/HCHO/TVOC/Temp & Humidity (OEM Packaging Available
$48.89 - $55.90
Shipping to be negotiated
Min. Order: 1 set
Smart CO2 Carbon Dioxide Indoor Air Quality Monitor Temperature Humidity Measurement for Bedroom, Rooms, Offices, Classroom
$63.89
Shipping to be negotiated
Min. Order: 5 pieces
Indoor Air Quality 9999ppm Digital Carbon Dioxide Temperature Humidity NDIR Sensor IAQ CO2 Monitor WB DP Tester CO2 Meter
$93.50 - $103.90
Shipping: $44.40/piece
Min. Order: 1 piece
10 sold
Add to cart
Digital Carbon Dioxide Temperature Humidity CO2 Monitor WB DP Tester Handheld CO2 Meter (OEM Packaging Service Available)
$93.50 - $103.90
Shipping: $44.40/set
Min. Order: 1 set
21 sold
Add to cart
Indoor Air Quality IAQ Meter CO2, CO, Humidity RH%, Temperature, DP, WB, USB Data Logger(OEM Packaging Service Available)
$237.35 - $249.37
Shipping: $44.40/set
Min. Order: 1 set
Add to cart
Smart Wifi CO2 Detector Monitor Air Quality Indoor Temperature & Humidity Tester NDIR Sensor for Grow Tent, Mushroom, Home
$34.93 - $38.81
Shipping: $31.80/piece
Min. Order: 1 piece
Add to cart
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
Shipping to be negotiated
Min. Order: 1 set
23 orders
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