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

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

Aqara Zigbee Door And Window Sensor 3 Pack, Wireless Mini Contact Sensor, Home Automation, Requires Aqara Hub, Zigbee Connection, Kid Safety,

Aqara Zigbee Door And Window Sensor, Wireless Contact Sensor, Home Automation, Requires Aqara Hub (Not 3Rd-Party), Zigbee Connection, Kid Safety,

Zoiinet Door Sensor Outlet Plug Kit, Wireless Mini Contact Window Sensor, Group Control Unlimited Devices, No Wiring No Wifi, 130 Ft, 15A/1500W,

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

Safety Technology International, Inc. STI-3360 Wireless Entry Alert Chime With Receiver, Door Or Window Transmitter Sensor STI-3353 Receiver Sold

Ecobee Smart Sensor For Doors & Windows 2 Pack - Wifi Contact Sensor For Home Security, Energy Savings - Compatible With Smart Thermostats -

SMPL Door Sensor, Add-On For Alerts System, Monitor Your Door/Window/Cabinets/Drawers, Add Up To 20 Sensors, Simple To Install, Signal Up To 250Ft,

Switchbot Door Alarm Contact Sensor - Smart Home Security Wireless Window Alarm And Door Sensor, Add Switchbot Hub To Make It Compatible With Alexa

Onvis Thread-Enabled Homekit Door Window Contact Sensor,Wireless Mini Low-Energy Contact Sensor For Alarm System And Smart Home Automation, Ios Only (

Yolink Lora Smart Outdoor Contact Sensor & Hub Starter Kit, Gate & Shed Door Sensor, Universal Contact-Closure Sensor, Email/SMS/Push Alerts, 1/4 Mile

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

Yolink Lora Smart Door Sensor Starter Kit: Speakerhub Audio Hub & (3) Door Sensors - Up To 1/4 Mile Open-Air Range, Door Left-Open Reminders, Up To 5

Universal Door Window Sensor Compatible With VIVINT And 2GIG Security Systems - Surface Mount Wireless Contact

YOLINK Lora Smart Outdoor Contact Sensor, Gate & Shed Door Sensor, Universal Contact-Closure Sensor, Email/SMS/Push Alerts, 1/4 Mile Range, Alexa,

Tapo Door Sensor Mini, Requires Tapo Hub, Long Battery Life W/Sub-1G Low-Power Wireless Protocol, Contact Sensor, 15mm Wide Gap Allowed, Real-Time

THIRDREALITY Zigbee Contact Sensor 2 Pack,Door And Window Monitor, Home Automation,Works With Home Assistant,Smartthings,Aeotec,Homey,Hubitat Or Echo

Wifi Door Sensor: Wireless Window Sensor With App Alerts, Tuya Smart Contact Sensor For Home Security And Smart Home Automation, No Hub Required,

DSC SECURITY WS4945 WIRELESS ALARM DOOR/WINDOW CONTACT/TRANSMITTER

Eve Door & Window Wireless Contact Sensor (Matter)