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Shop the best prices on 7,341 great value gas detectors. Shopping for gas detectors is easy with Fruugo, with SALE discounts, offers and savings on Viewleaf, GreenZech, Other and more. Buy gas detectors online safely with Fruugo, with secure payment and fast shipping to Canada.

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225 - 256 of 7,341
SMART SENSOR AS5750 Refrigerant Leak Detector High Sensitive USB Rechargeable Halogen Leak Detector
$104.00 Save $35.00 RRP: $139.00
Refrigerant Leak Detector Tester with High Accuracy Quick Response Heated Diode Sensor Universal
$349.00 Save $110.00 RRP: $459.00
Air Quality Monitor Portable Air Detector with Clear LCD Display for Bedroom Monitoring and Precise Testing
$41.95 Save $22.05 RRP: $64.00
Tuya Wifi Air Quality Monitor Smart Home CO2 Detector Formaldehyde VOC CO2 CH2O Temperature Humidity Detector, Wifi
$29.95
Propane Detector 12V Natural Gas Sensor Leak Alarm 85DB Siren for Car RV Home Digital Propane Tester Meter(White)
$34.95
3 in 1 Carbon Dioxide Detector Air Quality Monitor Temperature Humidity Air Analyzer for CO2 Digital CO2 Meter for Home Office
$30.95 Save $23.05 RRP: $54.00
HLW-100 4-in-1 Air Quality Detector Formaldehyde CO2 PM2.5 PM10 Tester Smart Air Monitor Real-Time
$46.95 Save $12.05 RRP: $59.00
5 in 1 Air Quality Monitor TVOC HCHO Temperature Humidity CO2 Meter, USB Rechargeable CO2 Detector Black
$31.95 Save $57.05 RRP: $89.00
Air Quality Monitor CO2 Air Detector Carbon Dioxide Detector Temperature Humidity Sensor Real Time Reading
$59.00 Save $150.00 RRP: $209.00
MQ138 Formaldehyde Gas Detection Sensor Formaldehyde Sensor Module
$30.95 Save $8.00 RRP: $38.95
HLW-100 4-in-1 Air Quality Detector Formaldehyde CO2 PM2.5 PM10
$47.95 Save $11.05 RRP: $59.00
Formaldehyde Detector, TVOC Sensor, CO2, PM2.5, Temperature, Humidity, Air Quality, 5 in 1 Tester, Black
$33.95 Save $10.00 RRP: $43.95
S8-0053 400-2000 ppm Infrared CO2 Carbon Dioxide Sensor Serial Communication / PWM
$64.00 Save $20.00 RRP: $84.00
5V USB Portable Nitric Oxide Gas Detector NO Harmful Gas Concentration Alarm 0-250ppm
$409.00 Save $115.00 RRP: $524.00
4 in 1 Gas Detector CO H2S O2 EX Tester Analyzer LCD Display Rechargeable Sound Light Vibration Alarm Air Quality Tester
$219.00 Save $60.00 RRP: $279.00
ST9700 Portable Carbon Monoxide Tester, CO Gas Tester, Air Quality Monitor, Gauge Detector
$69.00 Save $20.00 RRP: $89.00
Aquarium CO2 Carbon Dioxide Monitor Glass Drop Tester Detector
$19.95 Save $6.00 RRP: $25.95
Mini Combustible Gas Detector Methane Natural Gas Leak Tester Sensor for Home HT66
$40.95 Save $13.05 RRP: $54.00
Infrared Carbon Dioxide Sensor, 5000ppm CO2 Concentration Detection, Air Quality Monitor for Smart Home, RV, HAVC
$32.95 Save $9.00 RRP: $41.95
WT8820 Portable Combustible Gas Detector Natural Gas Leak Detector Alarm High Sensitivity Test
$54.00 Save $15.00 RRP: $69.00
CO2 Meter CO2 Temperature and Humidity Sensor ndir CO2 Detector Air Quality Meter HG
$169.00 Save $70.00 RRP: $239.00
H58B Digital CO2 Sensor PPM Meters Mini Carbon Dioxide Detector Gas Analyzer Air Quality Monitor USB Detector TVOC HCHO PM2.5
$99.00 Save $30.00 RRP: $129.00
Air Quality Tester, Air Quality Monitor Indoor,Formaldehyde Detector,Sensor, Detect & Test Indoor Pollution, TVOC Gas Wholesales
$129.00 Save $40.00 RRP: $169.00
Indoor Carbon Dioxide Monitor NDIR Sensor Indoor CO2 Detector USB Charger 6 In 1 Carbon Dioxide Detector TVOC Detector For Car-black
$119.00 Save $30.00 RRP: $149.00
Gas Leak Detector 0–50000ppm Habicare
$69.00
HLW-100 4-in-1 Air Quality Detector Formaldehyde CO2 PM2.5 PM10 Tester Smart Air Monitor Real-Time Indoor Data
$54.00
50-1000 ppm Halogen Gas Detector Sound and Light Alarm Refrigerant and Freon Leak Tester for Air Conditioning
$27.95 Save $9.00 RRP: $36.95
Combustible Gas Detector Analyzer Monitor Sound Alarm Analog Bar Aalrm Temp Lcd Screen With Flexible Probe 50000 Ppm 100% Lel_k29
$239.00 Save $110.00 RRP: $349.00
2025 SMART SENSOR 4 in 1 Gas Detector HS and CO Monitor Industrial Digital Handheld Toxic Gas Carbon Monoxide Detector Carbonic Oxide Hydrogen Sulfide
$69.00 Save $370.00 RRP: $439.00
ASAIR ACD10 Electronic Carbon Dioxide Sensor Module Infrared NDIR High-Precision CO2 Gas Concentration Detection
$38.95 Save $25.05 RRP: $64.00
25Pcs Prepared Glass Slides High Definition Insect Animal Plant Specimens for Biology Education
$41.95 Save $17.05 RRP: $59.00
Air Quality Monitor 5 in 1 Air Quality Detector C02 Detector Black
$17.95 Save $1.00 RRP: $18.95