The StarNet backplane is housed in a lockable metal enclosure and the Backplane features a tamper switch. Each backplane can accommodate 2 to 4 processor cards with the first slot containing card guides for the Access Control Processor (ACP II) which provides for:
Other plug-in modules
Communications across the StarNet backplane make use of the CAN Bus network running at 125 Kbits / second. Up to 8 two-way Backplane units or up to 4 four-way Backplane units can be connected together provided that the total network distance is less than 400m.
Central to the suite of StarNet products is the 2 or 4 way Backplane unit. This is a motherboard that allows various modules from the range to interface to the StarWatch master station software.