REMOTE CONTROL & MOBILE APP: Remote control and phone can control the infrared motion sensor alarm at the same time, no matter where you are, you can control the alarm mainframe and receive alert messages. WIDE APPLICATIONS: WiFi Smart Motion Sensor Alarm System motion detector can be used to monitor and protect your outdoor/indoor property. Such as driveways, front porches, gates, swimming pools, garages, sheds, etc. The sensors work well in any season. Operating temperature range is -30 to 150 degrees Fahrenheit. SHARED DEVICES: The WiFi Motion Sensor Alarm System is more secure. You can connect phone (Tuya) to share the device with other family members. When a sensor alarm is triggered, all family members receive the alert message on their phones at the same time, so not fail to receive the alert in time. 2 ALARM : Alarm Ringer/Door Ringer. The door motion sensor can be powered by 3 x AAA batteries (NOT included,and the battery can only be used as a backup and lasts for eight hours) Power Supply:3 x AAA batteries(Not included batteries) Colour:White Material:Plastic Package Contents: 1 * WiFi Smart Motion Sensor 1 * Remote control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.