4-wire expansion bus Expandable to 32 zones 2 partitions (1 partition when used with K636 keypad) 32 user codes 1.1A switching power supply In-field firmware upgradeable via a 307USB and WinLoad Menu-driven programming for the Installer, Master and Maintenance codes Multiple phone numbers: 3 for monitoring station, 5 for personal dialing and 1 for pager reporting Direct connect at 9.6k baud with WinLoad 256 events buffered GSM Reporting and SMS (PCS Series) E-Mail/Monitoring (IP100) On-board Zones: 4 (8w/ATZ) On-board PGMs:1 Patented dialer Supports VDMP3