2 Pack - Honeywell 5800MINI Door/Window Transmitter (REPLACES DISCONTINUED HONEYWELL 5811)

GAGALOR 4 Sets NC Wired Door Alarm Magnetic Contact Sensor With Double Side Tape

THIRDREALITY Zigbee Contact Sensor 4 Pack, Door And Window Monitor, Home Automation,Works With Home Assistant,Smartthings,Aeotec,Homey,Hubitat Or Echo

Ring Alarm Contact Sensor 2-Pack - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design | Easy Installation | Base

Ring Alarm Contact Sensor - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design Fits Any Frame | Easy

Sanjie Wireless Door Chime Sensor, When Door Opens, Entry Alarm For Business/Home/Kids, 5 Adjustable Volume Ringer Alert 2 Sensors + 1 Receivers, 500

Sanjie Door Chime, Door Open Contact Sensor Alarm For Business/Store/Home/Office When Entering, With 500 ft Range,26 Chimes 5 Adjustable Volume 2

Eve Door & Window (Matter) - Wireless Contact Sensor - 3-Pack

MOBI Smart Wi-Fi Door & Window Sensor Real-Time Alerts, App Control, Easy Install - 2Pk

3In1 Alarm - Door Left Open Alarm, Doors Chime With Delay, 0/5/10/30/60 Seconds, 2/5 Minutes, Door Ajar Alert, 80 To 120 Db, Close Door Reminder For

Ring Retrofit Alarm Kit | Convert Wired Security Contact Sensors To Ring Smart System | Compatible With Most Door & Motion Sensors| Pro Install