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)

$32.97 on Amazon

#2 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

#3 2 Pack Upgraded Combination Yfwsrecinoe 2 Pack Upgraded Combination Smoke and Carbon Monoxide Alarm Detector, Dual Sensor Smoke Alarm&Carbon Monoxide Detector (Includes Battery)

$35.99 on Amazon

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

$109.93 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 Digital Gas Leak Detector MM ELECTRONICLES Digital Gas Leak Detector Alarm Sensor Propane Butane Methane Natural Gas Catch

$19.47 on Ebay

#7 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

#8 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

#9 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, F2)

$15.67 on Amazon

#10 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

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

$68 on Walmart

#12 🔥 Leak Detector Water Sensor FloodStop Leak Detector Water Sensor, Wired

$36.96 on Amazon

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

$29.99 on Ebay

#14 🆕 433MHz KERUI Wireless 433MHz KERUI Wireless PIR Detector Motion Sensor For Home Intruder Alarm System

$12.64 on Ebay

#15 500 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

$135.50 on Amazon

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

$28.99 on Amazon

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

$30.15 on Amazon

#18 Leak Alert Electronic Zircon Leak Alert Electronic Water Leak Detector & Flood Sensor Alarm with 90dB Audio Dual Leak Alarms, 1 Pack,White

$14.99 on Amazon

#19 A3144 Hall Effect Switch CHENJIN A3144 Hall-Effect Switch 10PCS 3144E 3 Terminal Sensitive Hall Effect Detector Switchs Sensor Transistor for Arduino OH3144 Magnetic Sensor

$6.59 on Amazon

#20 Stud Finder Wall Scanner QLUUE Stud Finder Wall Scanner, 5 in 1 Electronic Stud Detector with Center Finding & Sound Warning, Beam Finder Wall Detector Stud Sensor for Wood/Beam/Joist/Pipe/AC Wire/Metal (9V Battery)

$14.99 on Amazon