detectors and sensors best sellers

#1 4 in 1 Upgraded Natural NICGOL 4-in-1 Upgraded Natural Gas Leak Detector and Carbon Monoxide Detectors, Dual Sensor Gas Leak Detector & Carbon Monoxide Detectors Plug in (Temperature & Humidity) for Home, RV (Black)

$36.99 on Amazon

#2 2 Pack Upgraded Combination Yfwsrecinoe 2 Pack Upgraded Combination Smoke and Carbon Monoxide Alarm Detector, Dual Sensor Smoke Alarm&Carbon Monoxide Detector (Includes Battery)

$27.49 on Amazon

#3 Infrared Thermometer Kizen Infrared Thermometer Gun (LaserPro LP300) - Handheld Surface Thermometer for Griddle, Grill, Oven, Engine, & A/C - Laser Surface Temp Reader -58F to 1112F - Heat Detector, Temperature Sensor Gun

$22.94 on Amazon

#4 White Flo Smart Water Moen White Flo Smart Water Leak Detector, Water Sensor Alarm for Home, 3-Pack, 920-005

$124.07 on Amazon

#5 Leak Alert Water Leak Zircon Leak Alert Water Leak Detector & Flood Sensor Alarm/Water Leak Sensor with Dual Leak Alarms 90Db Audio/Battery Powered (2 Pack) Batteries Not Included (72311) White

$27.99 on Amazon

#6 Pipe Blockage Detector Yeipower Pipe Blockage Detector Locators-Sensor - Water Pipe Wall Scanner 30M Pipeline Detector Metal PVC Water Pipes Clogging Tool

$126.99 on Amazon

#7 🔥 Pipe Blockage Detector Yeipower Pipe Blockage Detector Locators-Sensor - Water Pipe Wall Scanner 40M Pipeline Detector Metal PVC Water Pipes Clogging Tool

$144.99 on Amazon

#8 🔥 GQ EMF 360 Multi Field GQ EMF-360 Multi-Field EMF Meter, 3-in-1 Ghost Detector, RF Sensor

$68 on Walmart

#9 Digital Gas Leak Detector MM ELECTRONICLES Digital Gas Leak Detector Alarm Sensor Propane Butane Methane Natural Gas Catch

$19.47 on Ebay

#10 New QRI2B2.B180B SIEMENS ICINVENTORY New QRI2B2.B180B SIEMENS Burner Infrared Flame Detector Flame Sensor

$340.87 on Ebay

#11 Leak Detector Water Sensor FloodStop Leak Detector Water Sensor, Wired

$30.15 on Amazon

#12 10 Year Smoke and Carbon Ecoey 10-Year Smoke and Carbon Monoxide Detector, Dual Sensor Smoke CO Alarm with Built-in Battery and Silence Function,FJ183-A,4 Packs

$107.99 on Amazon

#13 🆕 21031556 Hardwired Interconnected Kidde 21031556 Hardwired Interconnected SmokeAlarm Detector Photoelectric Sensor

$29.99 on Ebay

#14 500 Foot Range Wireless Guardline 500 Foot Range Wireless Driveway Alarm [1 Motion Detector Alarm Sensor & 1 Receiver] Weatherproof Outdoor Security Alert System for Home & Property

$105 on Amazon

#15 Pro 3 Driveway Alarm eMACROS Pro 3 Driveway Alarm with Phone App,1/2 Mile Long Range Solar Wireless Driveway Alarm,Outdoor Driveway Alarms Wireless Outside Weatherproof Motion Sensor & Detector（Only Sensor）

$32.99 on Amazon

#16 Carbon Monoxide Detector CO FDUIOSPF Carbon Monoxide Detector,CO Gas Monitor Alarm Detector,CO Sensor with LED Digital Display for Home,Depot,Battery Powered(2Pcs)

$17.85 on Amazon

#17 DC12 24V NPN PNP 3 Wire Taidacent DC12-24V NPN PNP 3 Wire Inductive Proximity Limit Switch Metal Detector Proximity Sensor Iron Induction Micro Proximity Switch Sensor (NPN Normally Open, H2)

$13.98 on Amazon

#18 Water Sensor Alarm Leak SECRUI Water Sensor Alarm Leak Detector: 120db Water Leak Detector, Water Sensor Alarm for Home Basement Floor, Flood Wireless Leakage Drip Moisture Detection Alert Devices Overflow Monitor

$25.99 on Amazon

#19 Leak Detector Water Sensor FloodStop Leak Detector Water Sensor, Wired

$28.99 on Amazon

#20 Leak Detector Water Sensor FloodStop Leak Detector Water Sensor, Wired

$30.15 on Amazon