The mydlink DCH-B112 Smart Door/Window Sensor is a discreet contact sensor that detects when a door or window is opened or closed, giving you a trigger for automating your smart home. It works with Amazon Alexa or the Google Assistant for convenient hands-free voice control. Take it to the next level with IFTTT recipes to automate with other Smart Home compatible devices. Save time, and enjoy a safer, more comfortable home.

Be at Home, Even When You’re Out
No more wondering if you left your door or windows open. The mydlink Smart Door/Window Sensor lets you check on them from anywhere with your phone. It also sends an alert whenever a door or window is opened, or when someone tampers with the sensor by prying it off its surface.

Specially Designed Modules
The DCH-B112 discretely mounts where a door or window meets its frame. When the main sensor unit is separated from the magnetic trigger, mydlink will push out a notification to your mobile device or actions to other connected devices in your mydlink Smart Home network - created by mydlink Smart DIY devices with built-in hub functionality, and it doesn’t rely on Wi-Fi as it uses ZigbeeTM technology to connect to the hub. Alternatively, press the built-in sensor bypass button to open your doors and windows without activating the alert.

Get More Control With mydlink
Set up the DCH-B112 easily via the free mydlink app. Simply download and install the app on your mobile device and follow the step-by-step instructions to quickly configure the sensor.

Key Features

Requires a mydlink ZigBee Smart Home Hub (DCS-8330LH) or Amazon Echo Plus/Studio[2]

Open/close detection for your doors and windows

Battery-powered for unrestricted placement – no power outlet needed

Triggers automations with other mydlink cameras and smart plugs

Compatible with the Google Assistant, Alexa and IFTTT

Tamper detection for greater peace of mind

Get open/close alerts on your phone

Easy mounting on any flat surface on your door or window

Sensor Bypass Button allows you to open doors and windows without triggering an alert

Intuitive setup using the free mydlink app

Connects using Zigbee™ technology[2]

*Coin/button cell battery safety information
This product contains a coin/button cell battery. If the battery is swallowed it can cause severe internal burns and, in extreme cases, can lead to death. Keep batteries away from children.

[1] Battery life based on 15 detections per day. An opening or closing is counted as one detection.
[2] This device connects using Zigbee technology and requires a mydlink Hub or Amazon Echo Plus device to communicate with your home network. D-Link makes no guarantees of interoperability with devices from other manufacturers.