iMeshbean&reg; 2015 NEW PSTN Professional Wireless Home Security Alarm System DIY Kit with Auto Dial USA 99 Wireless distinguishable guard areas LCD indicator on the host machine. Using micro-computer to operate the alarm system, it can prevent theft, Wireless remote control to activate / deactivate through telephone system; The micro-computer auto calling reporting system can program a maximum of six (6) telephone numbers and it can be to a mobile phone or fixed line phone. Owner of the alarm system is able to listen to the conversation of the intruders on the phone and the owner may re-activate the alarm to go off the second time to frighten the intruders; Horn hooting time length control option(1-9 minutes selectable by user) Telephone line cut off alarm function option; Build in NI-HI rechargeable battery is available to provide power supply nearly 5 hours automatically after power off.