Wireless Home Security Alarm System that we offer can preset and store 6 voice phones and 3 message phones. It is a remote two-way intercom. Our Wireless Home Security Alarm System can connect wireless siren (Optional). It comes with 10-second automatic message recording and built-in intelligent English message systems. It has one-key-control functions such as out alarm, home alarm and remote alarm. The Main unit of our Wireless Home Security Alarm System is anti-tamper and it has low-voltage detecting function.