here!
I’m your shopping assistant for PC builds, upgrades, and everything tech.
Got questions? Ask away!
Start a conversation
"mini monitor"
AJMRTC Digital TDS Meter 0-9990ppm Water Purity Tester Pen, Portable Water Quality Monitor Detector for Laboratory, Aquarium, Swimming Pool, Drinking Water, Hydroponics Water Testing Measurement
Limited time offer, ends 11/25
$11.07
Free Shipping
GC-01 Geiger Counter Nuclear Radiation Detector, Radiation Dosimeter with LCD Display, Portable Handheld Beta Gamma X-ray Rechargeable Radiation Monitor Meter, 5 Dosage Units, 0.0Sv-500mSv
Limited time offer, ends 11/08
$94.24
Free Shipping
5-in-1 WiFi pH Meter Monitor, Water Quality Tester for pH TDS Salinity S.G Temperature, Tuya Smart APP Remote Monitoring with Alarm & Easy Calibration, for Aquarium Hydroponics
Limited time offer, ends 11/07
$166.70
Free Shipping
Hydrogen Sulfide Detector H2S Monitor 0~100ppm Electrochemical H2S Sensor LED Alarm with LCD Screen Backlight Portable Tester
Limited time offer, ends 11/07
$154.37
Free Shipping
Hydrogen Sulfide Detector Portable H2S Detector Monitor with Sound and Flash Alarm 0~100ppm Electrochemical H2S Sensor with Clip and LCD Screen Backlight
Limited time offer, ends 11/07
$154.37
Free Shipping
Yunseity Soil Meter, Smart Soil Tester with Real Time Monitoring for Indoor Plants, Humidity Temperature Alarm and Low Battery Alert
Limited time offer, ends 11/09
$37.99
Free Shipping
CO2 Meter Air Quality Monitor Smart CO2 Monitor Carbon Dioxide Temperature Humidity Detector for Indoor and Outdoor
Limited time offer, ends 11/07
$238.97
Free Shipping
Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory
Limited time offer, ends 11/07
$109.70
Free Shipping
Gain Express PH & EC Conductivity Monitor Meter Tester Plug-in ATC, Water Quality Real-time Continuous Monitoring, Wall Mountable & Rechargeable, for Aquaculture, Aquarium, Pond, Hydroponics
Limited time offer, ends 11/07
$160.70
Free Shipping
EC pH Monitor for Hydroponics, 6-in-1 Water Quality Tester with Wi-Fi, pH Meter Tester, Continuous Monitor of pH PPM EC CF Humidity Temp of Indoor DWC Grow System,Hydro Reservoir Tank
Limited time offer, ends 11/07
$178.70
Free Shipping
HVAC Refrigerant Leak Detector Heated Diode Portable 17' Goosneck Probe Sensor Freon Leak Detector with Audible, Visual Alarm and LCD Bar Graph Display
Limited time offer, ends 11/07
$406.70
Free Shipping
CO2 Controller Carbon Dioxide Controller CO2 Meter Dector Monitor Day and Night CO2 Control Relay Function 4.6m Long Cable Dual Channel Low Drift NDIR Sensor for Green House Grow Room Factory Home Off
Limited time offer, ends 11/07
$466.37
Free Shipping
FNIRSI GC-01 Geiger Counter Nuclear Radiation Detector,Curve Display | Handheld Rechargeable Beta Gamma X-ray Radiation Monitor Meter,5 Dosage Units,Radiation Dosimeter Nuclear Survival Kit
Limited time offer, ends 11/07
$152.87
Free Shipping
Hygrometer UT353 UT353BT Sound Level Bluetooth Meter Digital Noise Measuring Tester 30-130dB Professional Decibel Monitor dB Detector(UT353BT with Bluetooth function)
Limited time offer, ends 11/08
$97.04
Free Shipping
12V automotive electronic car relay tester, general-purpose automotive battery checker for automobiles
Limited time offer, ends 11/08
$33.20
Free Shipping