Constructed from heavy-duty steel and aluminum, SECO-LARM's SK-1123-SQ features two Form “C” relays rated 5A at 28VDC and 1A at 28VDC. Each relay features an independent egress input that can be programmed from 1 to 99 seconds. A built-in tamper-switch rated 3A at 12VDC and high- security screws offer vandal-resistant protection. Up to 110 user codes can be programmed; each code can be 4 to 8 digits in length. Other features include illuminated keys for easy nighttime use, 12-24 VDC/VAC dual voltage operation, door- forced-open and door-propped-open alarm outputs, and over 100 million user code combinations.