Digital Key Switch (490-0537) Features Faxback Doc. # 19966 Your Radio Shack Digital Key Switch is a high-quality, UL-approved security keypad that connects to your alarm system and eliminates the need for a key to arm and disarm your alarm. Instead, you simply enter your personally selected four-digit code. The keypad's microprocessor lets you select from 10,000 possible codes. You can change the code as often as you like. Your keypad has these features. SELECTABLE ARM/DISARM MODE SWITCH - lets you use the switch to control a wide variety of security systems or other remote-switched devices. ARM AND LOOP INDICATORS - show the alarm's status (if your system provides connections for remote arm and remote loop indicators). PANIC CIRCUIT - lets you quickly trigger the alarm from the keypad. BUILT-IN TAMPER SWITCH - sounds the alarm if someone tries to remove or damage the keypad. WRONG NUMBER LOCKOUT - makes you wait 10 seconds between incorrect attempts to discourage random code number entries by unauthorized persons. This product is UL listed under Standard Number 1023, "Household Burglar- Alarm System Units." Use only with UL-Listed security devices. (SP/YO 3/8/96)