Interested in making your home a "smart" home With this Wifi Smart Home kit youll be off to good start. Included is a Window/Door Sensor, PIR Motion Sensor, and Siren. The Window/Door sensor can be mounted on any window/door around the house. Once the window/door is opened an alert will be sent to your phone and to the siren. The PIR motion sensor can be mounted anywhere around the house. When the sensor is triggered and alert will be sent to your phone and the siren will activate. Both of these products can be set on a schedule to only activate an alert at a certain time. Controlled by Wifi with the App Tuya Smart. Compatible Google Home and Amazon Alexa.