Filters

Under $20 Gas Detectors

Shop the best prices on 443 great value under $20 gas detectors. Shopping for gas detectors is easy with Fruugo, with SALE discounts, offers and savings on Shanghai Yangxin. Buy gas detectors online safely with Fruugo, with secure payment and fast shipping to New Zealand.

Filters
1 - 32 of 443
Ordinary QRB1 Flame Detector Photosensitive Electric Eye Burner Detection Photoresistor Red QRB1 Photocell For Burner Waste Oil
$4.95 Save $24.00 RRP: $28.95
-SGP30 ECO2 Air Quality Gas Sensor Module TVOC Detection Chip
$17.95 Save $2.00 RRP: $19.95
III in 1 CO2 Meter Air Quality Monitor Handheld 5000Ppm Measurement Carbon Dioxide Det
$15.95 Save $43.05 RRP: $59.00
6 In 1 Air Quality Detector Lcd Large Screen Co2 Meter Pm2.5 Pm10 Hcho Tvoc Co Co2 Co Carbon Dioxide Formaldehyde Monitor
$16.95 Save $8.00 RRP: $24.95
CO2 Air Detector Carbon Dioxide Detector Agricultural Production Greenhouse CO2 Monitor White
$16.95 Save $16.00 RRP: $32.95
Lead Paint Test Swabs Kit: 60 Pcs Lead Test Kit Swabs
$16.95 Save $4.00 RRP: $20.95
Home Security 85db Wall Mounted Natural Gas Leak Detector Tester Alarm Sensor Qinhai
$6.95 Save $28.00 RRP: $34.95
High Precision Flaw Detection Gauge Line Width Defect Measure Line Width Defect Tool Line Defect Measuring Ruler For Line Width Defects And Measuring
$11.95 Save $67.05 RRP: $79.00
Air Monitor Co2 Carbon Dioxide Detector Air Quality Temperature Humidity Monitor Fast Measurement Meter
$20.95 Save $10.00 RRP: $30.95
BENGGUO CO2 Bicycle Pump with Insulated Sleeve CO2 Bike Tire Inflator Schrader Presta Valve for Qui
$15.95 Save $4.00 RRP: $19.95
Lcd Carbon Monoxide Co Detector Poisoning Gas Sensor Monitor Warning Alarm Set Shytmv
$10.95 Save $11.00 RRP: $21.95
Lcd Carbon Monoxide Co Detector Poisoning Gas Sensor Monitor Warning Alarm Set Shytmv-YKY416
$16.95 Save $9.00 RRP: $25.95
-SGP30 ECO2 Air Quality Gas Sensor Module TVOC Detection Chip
$19.95 Save $2.00 RRP: $21.95
Four- Humidifier Module Humidifier Control Board Atomizer Driver Board Four- Humidifier Module,Set C
$11.95 Save $8.00 RRP: $19.95
Indoor Co2 Sensor Co2 Meter Digital Air Detector Intelligent Air Quality Analyzer
$10.95 Save $11.00 RRP: $21.95
2pcs Mq-6 Mq6 Lpg Gas Sensor Module Liquefied Propane Iso-butane Butane Combustible Gas Detection Sensor
$10.95 Save $1.00 RRP: $11.95
5 in 1 CO2 Meter 400-5000 PPM Sensor Carbon Dioxide Detector Air Quality Monitor jy
$17.95 Save $14.00 RRP: $31.95
Co2 Air Detector Carbon Dioxide Detector Agricultural Production Greenhouse Co2 Monitor White
$20.95 Save $10.00 RRP: $30.95
Wireless CO Gas Alarm LED Digital Display High Sensitivity CO Concentration Detector for Household Ordinary Type
$14.95 Save $29.00 RRP: $43.95
PM2.5 Dust Detector, Household Indoor Laser Meter, Air Quality Testing Instrument, Gas Detector
$17.95 Save $181.05 RRP: $199.00
Lcd Carbon Monoxide Co Detector Poisoning Gas Sensor Monitor Warning Alarm Set Shytmv-YKY416
$16.95 Save $9.00 RRP: $25.95
Natural Gas Detector 0-10000Ppm,Sensitive Gas Leak Detector with Audible & Visual Alarm,Portable Gas Sniffer
$14.95 Save $29.00 RRP: $43.95
Ordinary QRB1 Flame Detector Photosensitive Electric Eye Burner Detection Photoresistor Red QRB1 Photocell For Burner Waste Oil
$7.95 Save $4.00 RRP: $11.95
Lcd Carbon Monoxide Co Detector Poisoning Gas Sensor Monitor Warning Alarm Set Shytmv
$15.95 Save $58.05 RRP: $74.00
Co2 Carbon Dioxide Detector Fast Measurement Meter Compatible Co2, White
$17.95 Save $28.00 RRP: $45.95
RF Detector Module Discharge Board Envelope Demodulation AM 0.1-3200MHz High Sensitivity
$11.95 Save $12.00 RRP: $23.95
AGS10 TVOC Air Quality Gas Sensor I2C MEMS Replaces AGS02MA For Arduino
$13.95 Save $50.05 RRP: $64.00
Gas Leak Detector Natural Gas Detectors Combustible Gas Detector
$17.95 Save $12.00 RRP: $29.95
ENS160+AHT21 CARBON Dioxide CO2 ECO2 TVOC Air Quality and Temperature and Humidity Sensor Replace CCS811
$19.95 Save $2.00 RRP: $21.95
-SGP30 ECO2 Air Quality Gas Sensor Module TVOC Detection Chip
$20.95 Save $10.00 RRP: $30.95
CO2 Air Detector Carbon Dioxide Detector Agricultural Production Greenhouse CO2 Monitor White - JK
$16.95 Save $13.00 RRP: $29.95
RF Detector Module Discharge Board Envelope Demodulation AM 0.1-3200MHz High Sensitivity
$11.95 Save $177.05 RRP: $189.00