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SA-223 DIGITAL KEYPAD Features Changeable 4-digit code Sealed Membrane keypad. Three LED indicators Arm-relay output N.C. / N.O. Tamper proof Panic button Low current drain Selectable Arm-Relay for latch or pulse Arm-relay pulse time Terminals provided for easy installation Built-in beeper gives audible feedback For outdoor use Specification Operating Voltage Operating Current Stand-By Current Operating Temperature Input Arm LED Input Status LED Output Arm-Relay Tamper Switch Interdigit Time 10 ~ 18 Volt DC 60 mA Max 3 mA -20 C ~ 50 C External +12V (Max) With Current Limit Resistor External +12V (Max) With Current Limit Resistor N.O./N.C. Contact Contact current 1 amp at 24 Volts D.C. Built-in N.C. Contact 6 Seconds (Max Time Between First To Last 4-Digit)