Alarm Window and Door Contact Sensor

Expand your Ring Alarm system to secure each door and window in your home, and get alerts as soon as they open. Subscription required, sold

Wireless Door Window Alarm Sensor 433MHz 1527 Code Battery Door Contact Sensor For GSM Alarm System Detect Window and Door - AliExpress

Honeywell 947-75T - 3/4” Diameter Steel Door Recessed Contact with Terminals - Alarm Grid

Door Contact Sensors

Enhanced Wifi Personal Security Window Door Alarm Wireless - Temu United Arab Emirates

CallToU Wireless Door Chime Digital Display Door Contact Sensor Alarm

APP ALERTS ON YOUR PHONE: Wifi door sensor, Tuya Smart or Smart Life APP control. No hub required and No fees charge. When door/window is opened

WiFi Door Window Sensor Detector: Wireless Security Alarm Door Sensor, Tuya Door Open Contact Sensor, Compatible with Alexa,Google Home,Siri, Smart

RC-36 NC Recessed Wired Door Contact Sensor Alarm Magnetic Reed Switch Brown

Ring Contact Sensor 2-Pack - White (4XD3S7-0EN0) for sale online

QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack of 10 with 40 Screws : Industrial & Scientific

Uxcell Magnetic Sensor Home Door Window Entry Warning Switch

uxcell N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-36 2pcs : Tools & Home Improvement