1.This machine can bind three groups of SOS number, peoples do not need to input any number when using this function in emergency ,Only need to press one of the four buttons on the side of the device directly. After 2 seconds, the SOS number which binding with the key will be connect.

2. The AD hoc SOS number can choose from the mobile phone contact number and fixed number, or the local police emergency alarm telephone number.

3. The AD hoc SOS function is suitable for any consumers, especially: children, students, old man, and female friends;