The TYCO IOB800 is an 8-input / 8-output I/O expansion board for Tyco MX fire detection systems. It provides 8 opto-isolated digital inputs and 8 × 24 V DC relay outputs, with decoded signal interfacing and expansion-bus connectivity for integration with external systems. The PCB references 125-165-271 and 125-585-653 are associated with the IOB800, while 557.202.006 is the standard product/order code.
Key Features
- 8 opto-isolated digital inputs for monitoring external signals.
- 8 relay outputs for controlling external equipment.
- 24 V DC relay outputs suitable for fire-system ancillary control.
- Connector provides decoded signals for all 8 inputs and 8 outputs for specialist interfacing.
- Two expansion-bus connectors allow IOB800 boards to be daisy chained.
- Designed for installation in a battery box or repeater.
- Can interface with FIM801/802, OCM800 and MPM800 system components.
Typical Applications
- Fire alarm panel I/O expansion
- Monitoring external fire-system inputs and status signals
- Control of ventilation/HVAC shutdown
- Interface with building management systems (BMS)
- Control of ancillary fire-protection equipment
- Interface with signalling and other external subsystems
- Marine/offshore fire detection installations where the IOB800 is used as an MX-system I/O expansion board.
