Infrared Alarm System (490-0330) Features Faxback Doc. # 17263 Your Radio Shack Infrared Alarm System is a high quality battery operated security device. It uses a passive infrared (PIR) motion sensor to detect and activate a built in alarm. You do not need to carry a key for arming and disarming your alarm system. Instead, you simply enter your personally selected four-digit security code. You can select from 10,000 possible codes and change the code as often as you like. Your alarm has these features: Built-in-Alarm Buzzer - Automatically sounds for 5 minutes when the system detects motion. Panic Alarm - Sounds the alarm immediately if you press * and # at the same time. Pulse Count Switch - Lets you set the number of pulses needed before the system sounds the alarm to help prevent false alerts. Entry/Exit Delay - Waits 30 seconds before activating the alarm to give you time to disarm the system, and gives you 30 seconds to leave the area before arming the system. Built-in Tamper Switch - Activates the built-in alarm if an intruder tries to remove the system from the wall when the system is armed. ARM/DISARM Indicator - Lets you know when the system is armed and disarmed. Zone Coverage Indicator - flashes when the system is disarmed to show you are moving within the coverage area. Dual Mode Indications - Works even when household or building electrical power is off. Low Battery Indicator - Flashes every 10 seconds to indicate the batteries need to be replaced. Low Power Consumption - Batteries last up to 12 months. Sensitivity Control - Lets you adjust the system to expand or reduce the sensor's range. Easy Wall Mounting - Requires no wiring; uses only two wood screws.