The XP95 Input / Output Unit with Isolator provides a voltage-free, double pole changeover (DPCO) relay output, a single monitored switch input and an unmonitored, non-polarised opto-coupled input.
An audible smoke or heat alarm could help to save a life. The alarm will detect either smoke or heat, and produce a loud siren alerting you to the fire. Westminster's wide range of detectors each contain optical technology, in order to reduce false alarms.