IO Expansion Board |1 x RS-485 |8 x supervised input (AUX IN) |8 x relay output (AUX OUT) |1 x power Input (PWR IN) |1 x power output (PWR OUT) |1 x power detection (AC fail) |1 x backup battery detection (BAT Fail) |1 x tamper input (TMPR) |Inputs : 4 state supervision, resistor values (5% tolerance) |Outputs: 8 relays, 8 x Form-C with dry contacts |RS485 Connectivity : RS485 standard / OSDP V2.2 |Power & Relays : 12 – 24 VDC ± 20%, 550 mA maximum
