【Home security alarm】 Magnetic door and window alarms emit a loud 130-decibel siren when doors and windows are suddenly opened. It prevents your children from sneaking out the door or intruders from entering 【Four alarm modes】 There are 4 different alarm modes: 1. open door alarm mode. 2. anti-theft mode for valuables. 3 Doorbell mode: Ring "Ding Dong" as the welcome sound. 4 SOS mode 【Alarm with remote control】 A door sensor alarm is equipped with 2 remote controls. Arm mode, SOS mode and deactivation mode, controlled by the remote control 【Various occasions】 Magnetic door alarm is small and suitable for many occasions. You can install it on the front door, back door, garage door, window, cabinet, drawer or anywhere you want to know if it is open 【Easy to install】 Easy installation with the adhesive tape we provide. Please make sure the sensor and magnet are aligned and the distance is less than 15mm. If you have any questions, please feel free to contact us. We will be happy to solve your problems