... English message;n Users can make calls by using keypad on alarm panel, just like a telephone;n ... n Remote control Arm, Disarm, Monitor, and Intercom by phone;n Built-in AAA NI-HI rechargeable battery ... English message;n Users can make calls by using keypad on alarm panel, just like a telephone;n ... n Remote control Arm, Disarm, Monitor, and Intercom by phone;n Built-in AAA NI-HI rechargeable battery ...