This device is designed for tuyasmart/Smart Life APP. You can set it to control other Tuya smart devices. You can check the status of the detector in the Alexa/ifttt app, but it cannot control other Alexa/ifttt devices. If you don't know how to connect to your Alexa/ifttt app Compatible with Alexa and Google Home: Just use your voice to control connected devices by Alexa or Google Home. It can also perform automatic control with other smart devices compatible with Smart Life or IFTTT. Convenient to detect your doors, windows, cabinets, drawers or anywhere you want to notify when it's open or closed. Door Sensor: 69.5 x 24mm. 14.8 x 16 x 40.50mm. Dimensions: main body: 93 x 40 x 20mm. Small body: 93mm x 13mm x 20mm. Contents : 1 x Tuya Wi-Fi Door/Window Sensor. Please note that due to manual measurements and display differences, there may be slight differences between individual products and photos.