Below: The Sentor ST300 Motherboard with ST330 Telephone Card and heat sink plate. These boards mount into the housing shown.

• 16 Programmable Inputs (expandable to 80 Programmable Inputs)
• 8 Digital Relay Outputs (expandable to 40 Outputs)
• Lead Acid Backup battery and onboard charger
• On-board lithium battery
• Tamper switch options
• Auxiliary Power outputs at 13VDC for driving optional devices
• Horn and siren outputs
• RS232 x 2 Communications port
• RS485 x 2
• X10 Power Line Carrier connection
• 19″ Rack, wall mount or other casing options
• Input Analog 0 – 30VDC
• 4 – 20mA input
• Temperature C & F
• Digital Relay outputs
• Protected Loop
• Ethernet option
• 3G GPRS Data Modem Option