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Shop the best prices on 5,965 great value gas detectors. Shopping for gas detectors is easy with Fruugo, with SALE discounts, offers and savings on Viewleaf, Aqara, Habicare and more. Buy gas detectors online safely with Fruugo, with secure payment and fast shipping to Canada.

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33 - 64 of 3,200
2 in 1, Carbon Monoxide Detectors,Smoke Detector,Smoke Combination CO Alarm,85db Alarm,LCD Large Sc
$21.95 Save $6.00 RRP: $27.95
SNDWAY SW-723 Gas Detector Carbon Dioxide CO2 Monitor Alarm 9999 PPM Sensor Professional Carbon Dioxide Tester Device COO Meter
$189.00 Save $90.00 RRP: $279.00
Formaldehyde Detector TVOC Sensor CO2 PM2.5 Temperature Humidity Air Quality Tester 5 in 1 Black
$29.95 Save $8.00 RRP: $37.95
OBD Adapter Kit Diagnostic Tool Universal Multifunctional 12in1 Fit for Car OBD
$469.00 Save $155.00 RRP: $624.00
CO2 Air Detector Carbon Dioxide Detector Agricultural Production Greenhouse CO2 Monitor Black
$33.95 Save $10.00 RRP: $43.95
Portable Propane Methane and Natural Gas Leak Detector Combustible Gas Tester Meter Sniffer with Sound Light Alarm Sensitive Adjustable
$54.00 Save $15.00 RRP: $69.00
NOYAFA Portable Formaldehyde Detector Indoor Air Quality Monitor HCHO and TVOC Monitor with ble Alarm LED Indicator for Home HVAC System
$30.95 Save $9.00 RRP: $39.95
5V USB Handheld Nitric Oxide Gas Detector Harmful Gas NO Concentration Alarms 0‑250PPM
$359.00 Save $100.00 RRP: $459.00
SMART SENSOR ST8990 Multi Gas Monitor Rechargeable 4 in 1 O₂ LEL CO H₂S Gas Detector Tester Sensor with Backlight Alarm Function LCD Display
$199.00 Save $50.00 RRP: $249.00
Portable Air Quality Detector CO2 TVOC HCHO Humidity Temperature 5 in 1 Multifunctional Indoor Air Quality Tester Meter White
$29.95 Save $9.00 RRP: $38.95
Environment Detector Air Gas Monitor Temperature Humidity Formaldehyde Alarm 100‑240V
$139.00 Save $50.00 RRP: $189.00
Air Quality Detector 5 in 1 Real Time Environmental Assessment Monitor for HCHO TVOC CO2 Temperature Humidity Detection
$59.00 Save $15.00 RRP: $74.00
Car Leak Detector Micro Intelligent Halogen Detector
$21.95 Save $7.00 RRP: $28.95
4in 1 Gas Detector CO H2S O2 EX Tester Analyzer Rechargeable LCD Display Sound Light Vibration Alarm Air Quality Tester
$189.00 Save $50.00 RRP: $239.00
Mh Z19 Infrared CO2 Sensor For Carbon Dioxide Indoor Air Quality Monitor
$59.00 Save $20.00 RRP: $79.00
SNDWAY SW-725A Wall Mounted Gas Analyzer CO2 Meter Tester Monitor Gas Detector Carbon Dioxide Detector
$289.00 Save $80.00 RRP: $369.00
Gas Detector Combustible Gas Oxygen Hydrogen Sulfide Carbon Monoxide 4 in 1 Detector US Plug AC100‑240V
$409.00 Save $115.00 RRP: $524.00
Gas Leak Detector with ble Visual Alarm High Accuracy Real Time Display Lightweight Combustible Gas Leak Tester
$38.95 Save $12.00 RRP: $50.95
Carbon Dioxide Detector Black Far Infrared Air Quality Monitor with Temperature Humidity Testing for Home
$84.00 Save $35.00 RRP: $119.00
Multifunctional Air Quality Monitor Formaldehyde PM2.5 PM10 Detector for Home Office Use
$69.00 Save $20.00 RRP: $89.00
LCD LPG LNG Coal Natural Gas Leak Security Alarm Sensor Warning Detector
$30.95 Save $9.00 RRP: $39.95
1PC AD8361 RF Microwave Real Power Detector AM Detector Amplitude Detection
$16.95 Save $6.00 RRP: $22.95
Digital Air Quality Monitor Carbon Dioxide Detector CO2 Tester Temperature Humidity Tester
$43.95 Save $15.05 RRP: $59.00
Carbon Dioxide Sensor CO2 Transmitter Concentration Sensor CO2 Industrial Concentration Detection Module
$79.00 Save $25.00 RRP: $104.00
4 in 1 Gas Detector LCD Display Compound Gas Measurement Detector Sound Light Vibration Alarm Data Record Combustible Gas Detector
$179.00 Save $50.00 RRP: $229.00
Air Quality Monitor Carbon Dioxide TVOC Humidity Temperature Detector Clear Display Accurate for Home Car
$36.95 Save $11.00 RRP: $47.95
Portable Carbon Dioxide Detector Useful CO2 Meter Air Quality Monitor with Storagecase
$209.00 Save $60.00 RRP: $269.00
3.2inch TFT Display Carbon Dioxide Detector Portable CO2 Tester Rechargeable Air Quality Meter with Storage Box Support Generate and Export PDF File
$209.00 Save $60.00 RRP: $269.00
CO2 Air Detector Carbon Dioxide Detector Agricultural Production Greenhouse CO2 Monitor White
$35.95 Save $10.00 RRP: $45.95
Gas Leak Detector Portable Handheld Low Consumption Combustible Gas Leak Tester with Dual Alarms
$54.00 Save $20.00 RRP: $74.00
5 in 1 Air Quality Detector Portable Indoor Tester CO2 HCHO TVOC Temperature Humidity Monitor for Home Car Office
$59.00 Save $15.00 RRP: $74.00
2.9-inch Air Quality Monitor CO2 Meter USB Rechargeable Thermometer & Hygrometer TVOC/HCHO/CO2 Detector CO2 Concentration Detector for Home Office
$45.95 Save $13.05 RRP: $59.00