Your house starts in safety mode, when you go outside, properly lock your door. once the lock or the door force an impact strength or the door openned by improper way. The auto alarm speaker starts alarm voice immediately. The alarm volume will be no less than 120dbs & the voice will uninterrupt around 20 seconds. Meanwhile, the wireless intelligent alarm system operator starts a calling signal to your telephone number, mobile number which set up & save in the operater, the operator will call 6 group telephone NUM to ensure you can receive the calling on time. So that you can receive this calling from the operator immediately. The operator will call 6 group telephone NUM to ensure you can receive the calling on time. Moreover, once received this calling you also can listen what happened actually situation via your telephone regarding your house after input the password.