12 zone inputs (24 zones with zone doubling) + 2 keypad zones 
1.1A switching power supply 
CTR-21 approved dialer 
2 partitions 
49 user codes 
256 events buffered 
2 PGM outputs + 1 alarm relay 
Supervised bell output, auxiliary output and telephone line 
2-wire smoke detector input option (input 3) 
Serial or parallel wiring for zone doubling connections 
Master Code Lock: cannot change or delete the Master Code or User Code 01 
Supports pager reporting 
Closing Delinquency Timer: transmit a report when last arming exceeds timer 
Auto-test report can now be set in hours or days 
Timed Test Transmission feature 
Includes 28cm x 28cm x 8cm (11" x 11" x 3") metal box