No. Of Onboard & Supported Zone: 10 To 16 Zone, No. Of Onboard & Supported Output: 6 Output, Keypad Display Type: LED & LCD, Support PC Programming: Yes, Supported Partitions: 4, Supported Timer: 4, Maximum No. User: 12 ( Per Partitions ), Maximum Phone No: 4, Supply voltage (±15%): 18 VAC, 50-60 Hz, Board dimensions: 173 x 102 mmen