The EIB144E is a Heat Alarm with 230V AC mains power supply with a replaceable, 9 volt, Alkaline battery back-up. The EIB144RC is ideal for increasing alarm coverage to areas such as kitchens, laundries and garages. The EIB144RC is supplied with the Brooks Easi-fit™ base to facilitate quick and simple installation, combined with simple smoke alarm head removal and replacement. The Easi-fit™ base automatically connects both mains power and battery as the smoke alarm head slides on. The EIB144RC may operate as a standalone Alarm or may be interconnected to other Alarms via a wired or wireless system. For a wireless system, each Alarm must be fitted with an EIB168RC RadioLINK™ base. When interconnected, all alarms in the system will sound when any single alarm is triggered. The Alarm is fitted with a Test / Silence button to facilitate frequent testing of your Alarm and System. The Silence function allows the Alarm / System to be silenced in the case of a false / nuisance alarm, e.g. steam or clothes dryer. The EIB144RC is fitted with a mains “power on” green LED indicator and red LED indicator for various conditions. The memory feature allows an Alarm that has previously activated to be easily identified (the red LED flashes twice every minute for 24 hours).