Features: *【Wifi Mode】 Connect to the Internet quickly. *【Sound and light alarm】 The alarm volume can be adjusted arbitrarily, and there is a red light reminder to scare away intruders. *【Alarm duration】can be manually set from 5 seconds to 180 seconds. *【APP remote control】One-click arming and disarming can be remotely set at any time through the Tuya APP on your mobile phone. It is more convenient to use.You can check at any time through APP (TUYA) to check whether the doors and-windows are open or closed. *【Low battery reminder function】The product uses 2 AAA batteries (not included). When the battery power is low, the phone will remind you to replace the battery. *【History】You can check when the doors and windows were opened and whether anyone else entered the house. Specification: *Battery: 2*AAA (not included) *Maximum volume: 100DB *Operating temperature: -10℃-50℃ *Wireless network type: 2.4GHZ 802.11b/g/n *Part 1 size: 90*37.5*21.5mm, Part 2 size: 57.5*17.5*17mm Package Contents： 1*Door sensor Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Benafini Smart Wifi Anti-Theft Alarm Reminder Remote Control Door Magnetic Sensor Our products are simple and stylish in design, suitable for various occasions, showing your personality and taste. When purchasing, please choose the appropriate color, style and quantity according to your preferences and needs. If you have any questions or suggestions about the product, please feel free to communicate with us, we will serve you wholeheartedly. Your satisfaction is our greatest motivation, you are welcome to leave us valuable comments and feedback. For damage or loss caused during transportation, we will provide free reissue or refund service.