It's all about distance.
SwitchBot Contact Sensors is made up of two components that are fixed close to each other on things such as doors and windows. With a detection range of up to 16.4 ft (5m) : horizontally, and vertically, any movements that your door or window makes can be detected to help notify you when contact takes place. Just simply align the magnet area with the bottom of SwitchBot Contact Sensor?s main body, and you're good to go.

Get notifications around the clock.
When connected to SwitchBot Hub Mini, SwitchBot Contact Sensor can push notifications to your phone when someone enters your home, when the window is open, or when your pet leaves its cage. Simply place Contact Sensor on any door or window, and your home security will be taken care of thanks to this helpful first line of defense that can alert you in seconds even when you are away from home.

Keeps your house safe when you leave home.
With its built-in motion sensor, SwitchBot Contact Sensor is able to tell when users have left or entered home when attached to the internal face of any door. When connected with a SwitchBot Hub Mini your smart home will then be able to start all your automated scenes that are pre-set via our app according to the conditions you have set.

Place it anywhere in your home.
Place our Contact Sensor anywhere in your home, it's small in size, easy to install, and can be placed on just about anything including refrigerators, pet cages, drawers, or windows and doors to help detect when they are opened or closed.

Warranty period one year assurance from the date of purchase. If you have any concerns or questions about using SwitchBot products, please kindly send Feedback to our support via the Feedback tab (on the left side menu) in SwitchBot App.