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Best Selling Products | Shop Now
Best Selling Products | Shop Now

Best Selling
Zd-06 Soil Ph & Moisture Tester Meter With 295Mm Long Electrode Probe Waterproof Kit Tools For
ZD-06 Soil pH & Moisture Tester Meter with 295mm Long Electrode Probe Waterproof Soil Tester Kit Tools, for Indoor & Outdoor Gardens Plants Flowers Farming
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DMT-3 High Accuracy Professional Diamond Moissanite Tester Gemstone 2pt Jewel Stone Combo Gem Jewelry Test Tool Selection Factory Calibrated Meter Identifier Device - Gain Express
DMT-3 High Accuracy Professional Diamond Moissanite Tester Gemstone 2pt Jewel Stone Combo Gem Jewelry Test Tool Selection Factory Calibrated Meter Identifier Device
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M0199720 6-In-1 Water Tester Combo Pen Ph Orp Ec Tds Salinity & Temperature Quality Meters
M0199720 6-in-1 Water Tester Combo Pen pH, ORP, EC, TDS, Salinity, & Temperature
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Ffw-718 Lucky Portable Wireless Fish Finder Locator With 45M (135Ft) Depth & 120M (400Ft) Range
FFW-718 Lucky Portable Wireless Fish Finder Locator with 45m (135ft) Depth & 120m (400ft) Wireless Range, Display Water Temperature/ Fish Size & Location, Fishing Gear Tools for Fresh & Salt water, Ocean, Sea, Lake, River, Ice Icy Water, 90° beam angle
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836-1 Digital Conductivity TDS Meter, ppm ppt uS mS °C/°F Pentype Water Quality Tester with ATC - Gain Express
836-1 Digital Conductivity TDS Meter, ppm ppt uS mS °C/°F Pentype Water Quality Tester with ATC
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CLMG-7173_LED Magnifier Scale Loupe 10x Magnification 8 LED Light 20mm Scale Chart & 25mm Field of View - Gain Express
CLMG-7173_LED Magnifier Scale Loupe 10x Magnification 8 LED Light 20mm Scale Chart & 25mm Field of View
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560-10A Shore A Digital Hardness Meter Durometer 0~100HA, Rubber Tire with LCD Display Pocket Size Tester - Gain Express
560-10A Shore A Digital Hardness Meter Durometer 0~100HA, Rubber Tire with LCD Display Pocket Size Tester
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868-5 Waterproof pH meter with Temperature + Auto Calibration - Gain Express
868-5 Waterproof pH meter with Temperature + Auto Calibration
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E-1325M 0-14 pH Electrode Probe BNC Connector, 300cm Cable for PH Meter Monitor Controller Test Sensor, Replacement Kit for Aquarium Hydroponics Plant Pool Spa
E-1325M 0-14 pH Electrode Probe BNC Connector, 300cm Cable for PH Meter Monitor Controller Test Sensor, Replacement Kit for Aquarium Hydroponics Plant Pool Spa
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SLM-25 Sound Level Meter with Backlit Display High Accuracy Measuring 30dB~130dB with Data Logging Function Instrument Compact Professional
SLM-25 Sound Level Meter with Backlit Display High Accuracy Measuring 30dB~130dB with Data Logging Function Instrument Compact Professional
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8403 Professional Digital Large LCD Dissolved Oxygen DO Meter Tester Handheld Water Quality Tester with Temperature Measurement
8403 Professional Digital Large LCD Dissolved Oxygen DO Meter Tester Handheld Water Quality Tester with Temperature Measurement
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88598 Digital 4 Channels K-type Thermocouple Thermometer SD Card Logger High / Low Alarm Big LCD Display - Gain Express
88598 Digital 4 Channels K-type Thermocouple Thermometer SD Card Logger High / Low Alarm Big LCD Display
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Ozx-300At O3 Generator W/ Built-In Air Pump Timer Ozone Output 500Mg/hr
OZX-300AT O3 Generator w/ Built-in Air Pump Timer, Ozone Output 500mg/hr
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AG-82413B Digital Protractor Angle Finder Level Inclinometer Magnetic V-Groove 0~360 with Backlight IP65 - Gain Express
AG-82413B Digital Protractor Angle Finder Level Inclinometer Magnetic V-Groove 0~360 with Backlight IP65
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Co98 Co2 Data Logger Temperature Humidity Monitor 9999Ppm Loggers
CO98 CO2 Data Logger Temperature Humidity Monitor 9999ppm
For Bulk Order Only. Please Contact Us.
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New Products
Smart Wifi Natural Gas Alarm Sensor Lpg Methane Ch4 Combustible Leak Detectors Support Home Life
Smart Wifi Natural Gas Alarm Sensor LPG Methane CH4 Combustible Gas Leak Detectors Support Home Smart Life Plug in and Protect
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Std-392 Wall Detector Stud Finder Positioning Hole Ac Live Cable Wires Metal Wood 12Cm (4.72In)
STD-392 Wall Detector Stud Finder Positioning Hole AC Live Cable Wires Metal Wood 12cm (4.72in)
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Tm-214 Digital Window Tint Meter 100% Visual Light Transmission 4000 Continuous Measurement 6.5Mm
TM-214 Digital Window Tint Meter 100% Visual Light Transmission 4000 Continuous Measurement 6.5mm Thickness Portable Device for Car Window Vehicle Curtains
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Slm-390 Decibel Meter With Data Logging Function And A / C Z Weighted Sound Portable Spl Max/Min/Avg
SLM-390 Decibel Meter with Data Logging function and A / C / Z Weighted Sound Meter Portable SPL Meter MAX/MIN/AVG, Data Hold Use for Home, Factory, Noisy Neighbor
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Gam-391 Geiger Counter Nuclear Radiation Detector Handheld Dosimeter Beta Gamma X-Ray Rechargeable
GAM-391 Geiger Counter Nuclear Radiation Detector Handheld Dosimeter Beta Gamma X-ray Rechargeable Radioactive Monitor Tester Switchable 5 Dosage Units for Outdoor Industry Research and Personal Home Usage
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The-387 Smart Bluetooth Meat Thermometer 500Ft Wireless Range For Bbq Oven Smoker Grilling Kitchen
THE-387 Smart Bluetooth Meat Thermometer 500FT Wireless Range for BBQ, Oven, Smoker, Grilling, Kitchen Food Temperature Measure
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Gem-386 Rechargeable 10X Full Metal Jeweler Optical Magnifying Glass 5 Led Uv Light Scale Loupe Usb
GEM-386 Rechargeable 10X Full Metal Jeweler Optical Magnifying Glass 5 LED 5 UV Light Scale Loupe USB Charging Lens Jewelry Gemstone Magnifier Tool
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Aqm-388 Portable 9 In 1 Indoor Air Quality Meter Co2 Monitor Formaldehyde Detector Voc Sensor Aqi
AQM-388 Portable 9 in 1 Indoor Air Quality Meter CO2 Monitor Formaldehyde Detector VOC Sensor AQI Index PM2.5 PM10 and Humidity Temp with Time Display Air Monitor Test Kit
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Aqm-385 Carbon Dioxide Co2 Monitor 0~5000Ppm Range Large Colored Led Screen Display Iaq Meter Air
AQM-385 Carbon Dioxide CO2 Monitor 0~5000ppm Range Large Colored LED Screen Display IAQ Meter Air Quality Tester NDIR Sensor
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Aqm-384 Portable Gas Detector Co Hs O Ex (Lel) 4 Detection Rechargeable Clip Sniffer With Audible
AQM-384 Portable Gas Detector CO H₂S O₂ EX (LEL) 4 Gas Detection Gas Rechargeable Clip Sniffer with Audible Visual Vibration Alert and Voice Prompt
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Par-380 Quantum Par Meter Photo Synthetically Active Radiation Ppfd Tester For Plant Lighting
PAR-380 Quantum PAR Meter Photo Synthetically Active Radiation PPFD Tester for Plant Lighting Horticulture, Research Study of Indoor and Outdoor Plants
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Dom-383 Digital Rechargeable Do Meter Dissolved Oxygen Tester With Floating Probe Long Cable
DOM-383 Digital Rechargeable DO Meter Dissolved Oxygen Tester with Floating Probe Long Cable Electrode, ATC
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Slm-30B Professional Sound Level Meter With Smart Bluetooth Function 20000 Datalogging Max/Min/Hold
SLM-30B Professional Sound Level Meter with Smart Bluetooth Function 20000 Datalogging Max/MIN/Hold Alarm
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Dy003 Nuclear Radiation Detector Dosimeter Smart Wi-Fi Monitor Geiger-Müller Counter With 10000
DY003 Nuclear Radiation Detector Dosimeter Smart Wi-Fi Monitor Geiger-Müller Counter with 10000 Groups of Data Touch Screen Key
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Fit-381 Professional Fuel Injector Tester Diy Diagnosis Tool Kit Automotive Gasoline For Identifying
FIT-381 Professional Fuel Injector Tester DIY Diagnosis Tool Kit Automotive Gasoline Injector Tester for Identifying Stuck, Leaking, and Burnt-Out Injectors, with 4 Pulse Modes Diagnostic Tool
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Fish Finders

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FFW-335 Fish Finder Wireless Sonar Sensor 125kHz Frequency 45 Meters / 147 Feet Depth Alarm Function and Large LCD Display
FFW-335 Fish Finder Wireless Sonar Sensor 125kHz Frequency 45 Meters / 147 Feet Depth Alarm Function and Large LCD Display
$96.90 USD
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FF-180PR LUCKY Underwater Camera Fish Locator Finder 120° Wide Angle 20M Cable Length 4 IR LED 4.3" Display Video Photo Capture Rechargeable
FF-180PR LUCKY Underwater Camera Fish Locator Finder 120° Wide Angle 20M Cable Length 4 IR LED 4.3" Display Video Photo Capture Rechargeable
$130.90 USD
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Ff-180Ar Lucky Underwater Camera Fish Locator Finder Sun-Visor Liftable Protective Cover 120° Wide
FF-180AR LUCKY Underwater Camera Fish Locator Finder Sun-Visor Liftable Protective Cover, 120° Wide Angle 20M Cable Length 4 IR LED 4.3" Display Video & Photo Capture Rechargeable
$112.90 USD
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Ff-218Tpa Lucky Fish Finder Color Display Fishfinder Fishing Locator Wireless Sonar Sensor 45M
FF-218TPA LUCKY Fish Finder Color Display Fishfinder Fishing Locator, Wireless Sonar Sensor 45m (147.6ft) Depth Range, Shallow Slop Raft Ice Mode Air & Water Temperature Air Pressure
For Bulk Order Only. Please Contact Us.
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Testimonials

I am very excited to try this meter out. It has such an affordable price for a data logging meter. Gain Express Customer Service has been fantastic - very punctual and responsive. Thank you Gain Express!

Haralami S.

I purchased some items from Gain Express and they gave me a quick delivery. Thank you very much for your best service.

BSCS Science Learning

It was really awesome service your company provides, especially your customer care department. They respond very quickly about any query. 

Godin A.