A miniature I/O Module specifically designed for use with a Hush-Pro domestic fire alarm system. Can be used to (1) activate a third-party device when there is a Fire Level 2 Alarm on a Hush-Pro System and/or (2) to trigger a Fire Level 2 Alarm on a Hush-Pro system when a third-party device activates. Includes an onboard, bi-directional, short-circuit isolator, a monitored switch input, a changeover relay and fire LED outputs. Supplied with a 7-way ribbon cable (150 mm length), 7-way terminal block, trigger resistor and EOL resistor. Measures 65mm x 60 mm x 20 mm so it can fit into equipment with limited space. HP734 Fire Level 1 Mini I/O units also available.