I have 3 of these in a heating system with a hot water boiler. One measures the temperature of the outside air, another measures the temperature of the water circulating through my floors (80-100 degrees) and the third measures the temperature of the boiler circuit (typically 180 degrees). The boiler circuit sensor fails regularly every 5 years. The other two have been running without problems for 20 years. I keep 1 or 2 in reserve.
Optimized 433MHz Home Wireless PIR Infrared Motion Detector Sensor for Alarm System by KERUI
12 Review
Stay Safe And Secure: Wireless Motion Sensor And Pager Bed Alarm For Elderly And Kids
19 Review
🔒 Chamberlain Group CWA2000 Chamberlain Driveway Alert: Enhanced Security in Sleek Black Design
10 Review
Wireless Driveway Alarm System - Long Range 1/2 Mile with Solar Power & Weatherproof Design - Adjustable Sensitivities and Outdoor Motion Sensor for DIY Security Alert
11 Review
Fitbit Versa 3 Smartwatch Replacement Band: TOYOUTHS Elastic Nylon Fabric Strap For Women & Men
50 Review
Dingsun SVideo To HDMI Converter: 3RCA AV Support 1080P/720P Compatible With WII U, PS2/PS3, STB, Xbox & More!
43 Review
Effortlessly Navigate Your Laptop Or Desktop With The Perixx PERIPAD-501 Wired USB Touchpad
27 Review
HUANUO Adjustable Laptop Stand Riser For Desk - Fits Up To 15.6 Inch Notebook, Mesh Ventilated Cooling With 8 Tilt Levels For Improved Airflow & Ergonomics
29 Review