Airthings 2960 View Plus - Battery Powered Radon & Air Quality Monitor (PM, CO2, VOC, Humidity, Temp, Pressure)

$168

Air Quality Monitor 3 in 1 Carbon Dioxide Detector Portable, NDIR Sensor, CO2 Monitor Rechargeable, 400-5000 ppm Temperature(°F) and Humidity Meter for Home

$13.95

11-in-1 Air Quality Monitor, Indoor CO2/VOC/AQI/PM2.5/Thermometer/Humidity Monitor, Portable Smart Carbon Monoxide Detectors for Home Office Outdoor, Battery Powered

$15.99

VACLAB Professional Air Quality Monitor, Indoor Portable CO2, TVOC, HCHO, Humidity and Temperature Detector for Home, Office or School, Air Quality Tester, Confined Space Air Monitor

$59.99

Air Quality Monitor, Indoor Air Quality Meter Detects PM2.5 and VOCs, Portable Air Quality Tester Indoor, Battery Powered, for Home Office School Hotel Gym Car

$39.99

5-in-1 Professional Indoor Air Quality Monitor Indoor Portable CO2 Monitor,Temperature Humidity TVOC,HCHO,Air Quality Tester -Confined Space Clean Air Monitor Black

$59.99

9 in 1 Air Quality Monitor,Indoor Air Quality Meters Detect AQI,CO2,CO,TVOC,HCHO,PM2.5,PM10 with WiFi and Date Display,Real Time Monitoring,Battery Powered,Home Air Test Kits

$99.99

Newentor CO2 Monitor, Indoor Air Quality Meters, Carbon Dioxide Detector with Voice Alert, Large Display CO2 Tester, Temperature Humidity Sensor, Alarm Clock for Home, RV, Grow Tents, 400-5000ppm

$201.45

Manometer, Professional Air Pressure Meter, Dual-Port HVAC Digital Manometer Gas Pressure Tester,12 Selectable Units Differential Pressure Gauge, (Included Battery)

$93.49

AIROASIS 9-in-1 Professional Indoor Air Quality Monitor Indoor Portable PM2.5/PM10/CO2,Temperature, Formaldehyde Detector,Humidity TVOC,Time Display Air Quality Tester-Confined Space Clean Air Monitor

$39.99

CO2 Carbon Dioxide Detector, 4-in-1 Indoor Air Quality Monitor Portable CO2 Monitor, Tester for Carbon Dioxide, Temperature and Relative Humidity, CO2 Meter with Alarm, for Grow Tents, Homes, Cars

$94.99

9-in-1 Professional Indoor Air Quality Monitor Indoor Portable PM2.5/PM10/CO2, Temperature, Formaldehyde Detector, Humidity TVOC,Time Display Air Quality Tester - Confined Space Clean Air Monitor

$18.99

3 in 1 Real time CO2 Detector Plug in USB,CO2 Monitor Sensor with 4 Color Lights Alarm,Air Quality Monitor,℃/℉ Temperature and Humidity Tester Meter,Carbon Dioxide Detector for Indoor,Home,Office

$9.99

10 in-1 Indoor Air Quality Monitor with Portable Sensors for CO, PM2.5, CO2,Temperature & Humidity,VOC Sensor and AQI,Accurate Formaldehyde Detector,Suitable for Home&Office & School

$89.99

Airthings 2950 Wave Radon - Smart Radon Detector with Humidity & Temperature Sensor – Easy-to-Use – Accurate – No Lab Fees – Battery Operated - Free App

$24.99

Atmotube Battery Powered Pro Portable Outdoor and Indoor Professional Air Quality Monitor [PM, VOCs, Temperature, Humidity and Barometric Pressure Tester], Pollution Meter

$89.86

Qingping Air Quality Monitor, Indoor Air Quality Meter Detects PM2.5, Temperature, CO2, and Humidity, Smart Air Quality Sensor for Bedroom, A Rechargeable Device with 2 Colors, Smart Home

$49.99

AIROASIS Air Quality Monitor, Indoor Air Quality Monitor for CO2, TVOC, Formaldehyde, Humidity, Temperature Multifunctional air Pollution Detector, Easy Calibration Indoor Air Quality Meter

$39.99

INKBIRD Portable CO2 Detector with Bluetooth, Smart Indoor Air Quality Monitor, can detects CO2, Temperature, Humidity, etc., Electronic Ink Display & 4 Years Battery Life, for Home, Office, motorhome

$35

GoveeLife Hygrometer Thermometer H5104, Bluetooth Room Temperature Monitor with APP Alert and 2 Years Date Storage Export, Remote LCD Digital Hygrometer Indoor Humidity Meter, Greenhouse, Humidor, RV

$16.31

AIROASIS 5-in-1 Professional Indoor Air Quality Monitor Indoor Portable CO2 Monitor | Temperature | Formaldehyde Detector | Humidity TVOC | Air Quality Tester - Confined Space Clean Air Monitor

$99.99

Norpolifomor Real Time Air Quality Detector AQI Monitor Meter Formaldehyde Tester,TVOC Meter Temperature/Humidity Gauge,Particle Counter PM2.5 Meter for Cars,Homes,Schools

$74.95

Temtop Air Quality Monitor CO2 Detector Professional Carbon Dioxide PM2.5 PM10 Formaldehyde Temperature and Humidity Monitor w/Audio Alarm Data Export (M2000 2nd)

$49.99

Geevon Digital Hygrometer, 3 Pack Indoor Thermometer Room Temperature Humidity Gauge with Battery,Digital Temperature Humidity Meter Indicator for Home, Office, Greenhouse, Mini Hygrometer,Black

$89.99

PinoTec 5-in-1 Professional Indoor Air Quality Monitor Indoor Portable CO2 Monitor | Temperature | Formaldehyde Detector | Humidity TVOC | Air Quality Tester - Confined Space Clean Air Monitor

$74.95

PinoTec 5-in-1 Professional Indoor Air Quality Monitor Indoor Portable CO2 Monitor | Temperature | Formaldehyde Detector | Humidity TVOC | Air Quality Tester - Confined Space Clean Air Monitor

$89.99

APOMONO WT83 Temperature Humidity Meter, High Precision Thermometer Hygrometer with Ambient Dew Point Wet Bulb Temperature Indoor Outdoor, Max/Min Data Hold, 1000 Sets Data Log, Batteries Included

$36.99

GOYERRNES Air Flow & Wind Speed Meter, Handheld Cup Anemometer with Waterproof Touch Button, CFM Meter Gauge Air Velocity Measuring Device for HVAC Outdoor [Rechargeable]

$29.99

Carbon Monoxide Detector,CO Gas Monitor Alarm Detector,CO Sensor with LED Digital Display for Home,Depot,Battery Powered

$1.49

AUTOOL Digital Manometer, Dual-Port Manometer Gas Pressure Tester, Handheld HVAC Manometer, 12 Selectable Units Differential Pressure Gauge, Large LCD Display with Backlight

$20.49

INFURIDER Manometer, HVAC Digital Manometer Gas Pressure Tester, Handheld Air Pressure Meter, 11 Optional Units Differential Pressure Gauge YF-189B with Backlight, Data Hold Function…

$169.95

Lunarlipes Carbon Monoxide Detectors, Portable CO Detector with Temperature Sensor ＆ LCD Backlight Screen, Handheld Carbon Monoxide Meter Tester 0-1000PPM Range, Indoor/Oudoor (Includes Battery x3)

$27.59

Temtop Air Quality Monitor, Indoor Thermometer Portable AQI PM2.5, Temperature, Humidity Detector for Home, Office or School, Air Quality Tester, Battery Powered, Magnetic Suction

$8.99

LC-189B Manometer(30Psi), Digital Differential Pressure Gauge,Large Range Measurement, with Backlight Display, Suitable for HVAC Measurement, Gas Pressure System troubleshooting

$51.51

Manometer, Dual-Port Manometer Gas Pressure Tester Professional Digital HVAC Air Pressure Meter, Differential Pressure Gauge with LCD Display Backlight, Extension Hose,Data Record Funtion

$42.27

HoldPeak Handheld HVAC Anemometer, CFM Wind Speed Meter Air Flow Gauge Measuring Device with Waterproof Touch Button for HVAC Duct Air Vent, Sailing, Outdoor [Rechargeable]

$15.99

8-in-1 Indoor Air Quality Monitor, Formaldehyde Detector, Temperature & Humidity Meter, Sensor, Tester Detect PM2.5, CO, CO2, HCHO,TVOC,AQI Micron Dust, Home Air Test Kits

$94.99

BTMETER BT-100 Handheld Anemometer, Digital Wind Speed CFM Meter Gauge Air Flow Velocity Tester for HVAC Shooting Drone, Wind Chill, 14℉-113℉ Wind Temperature

$30.99

Kidde Carbon Monoxide Detector, AA Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable

$12.59

Indoor Outdoor Thermometer Hygrometer Wireless Weather Station, Temperature Humidity Monitor Battery Powered Inside Outside Thermometers with 330ft Range Remote Sensor and Backlight Display

$49.98

Digital Manometer Air Pressure Meter, YZT Meter Differential Pressure Gauge, HVAC Gas Pressure Meter Dual-Port Manometer Gas Pressure Tester (9v Battery Included)…

$49.99

Home Radon Detector, Portable Radon Meter, Elifecity Long and Short Term Home Radon Monitor, Battery-Powered, Easy-to-Use

$114.63

Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable

$24.49

GoveeLife E-Ink Bluetooth Thermometer Hygrometer, Smart Digital Indoor Wireless Temperature Humidity Sensor with Alert, Free Data Storage Export, for Home Room Greenhouse Wall, 2 Pcak (with Battery)

$16.67

Hti-Xintai Digital Manometer, Dual Port Air Pressure Meter Pressure Gauge HVAC Gas Tester, Large LCD Display with Backlight, Basic

$169.95

Digital Manometer, Professional Air Pressure Meter Differential Pressure Gauge with Dual Ports, 12 Selectable Units Manometer Gas Pressure Tester HVAC Manometer

$69.99

Mini Hygrometer Thermometer 2PCS Mini Digital Humidity Gauge, AikTryee Hygrometer Indoor Humidity Monitor Temperature Humidity Gauge Meter for Humidors Greenhouse Garden Cellar Closet Etc

$9.99

DOQAUS Digital Hygrometer Indoor Thermometer for Home, Room Thermometer with 3s Fast Refresh & Max Min Records, Temperature Humidity Monitor Meter with Touch LCD Backlight, USB Rechargeable

$25.99

Lunarlipes Portable Carbon Monoxide Detectors for Travel, Mini 3-in-1 Carbon Monoxide Monitor with Magnetic Suction, RV CO Detector Alarm Temp/Humidity Sensor, Air Quality Monitor for Indoor/Oudoor

$19.39

Digital Manometer, Air and Gas Pressure Tester, Differential Dual Port Pressure Gauge, Large LCD Display with Backlight Klein Tools ET180

$99.99

Homedics HM100 Indoor Humidity Monitor, Easy-Read Hygrometer to Monitor Indoor Air Comfort, Fahrenheit and Celsius, Battery-Operated Room Thermometer for Home

$17.99

5-in-1 Indoor Air Quality Monitor,Professional CO2 Monitor | Temperature | Formaldehyde Detector | Humidity TVOC | Air Quality Tester with Alarm for Rooms,Cellars,Grow Tents,Offices,Air Quality Tester

$89.99

AUTOOL Manometer Gas Pressure Tester,Digital Manometer HVAC,11 Units Differential Dual Port Pressure Gauge -100 to 200Kpa,Data Zeroing with Backlight LCD Display

$68.91

Indoor Thermometer Outdoor Hygrometer Wireless, Temperature Humidity Monitor Battery Powered Inside Outside Thermometers with 330ft Range Remote Sensor(Blue)

$9.99

Wireless Weather Stations Indoor Outdoor Thermometer Hygrometer, Temperature Humidity Monitor Battery Powered Inside Outside Thermometer with 330ft Range Remote Sensor and Adjustable Backlight

$23.99

BTMETER BT-881W Heat Stress Meter Anemometer, Digital Indoor/Outdoor WBGT (Wet Bulb Globe Temperature) Meter with Wind Speed, Ambient Temp, Humidity Tester

$46.99

Midcvfrun Easy Read Manometer, Professional U-Shaped Air Pressure Indicator Pressure Gauge for Radon System Monitoring

$35.99

Fluke 324 True-RMS Clamp Meter with Temperature & Capacitance, Measure AC Current Up To 400 A and AC/DC Voltage Up to 600 V, Includes Backlit Display, Measure Resistance Up To 4000 Ohms

$59.99

GRAY RHINO Carbon Monoxide Detectors Plug in Wall, Portable Carbon Monoxide Detector with Alarm, [3-in-1] Travel CO Detector | Humidity |Temperature Meter, Mini Co Gas Monitor Home Hotel Trip Camp RV

$42.24

GoveeLife Smart Air Quality Monitor with PM2.5, WiFi, Temperature & Humidity Sensors, LED Display, 2s Refresh, 2-Year Data Storage - For Home & Office

$178.99