» Alarm Annunciator Panels: type LHM1 and LHM8

The single zone LHM1 is a fully self-contained alarm unit designed to be used either as a single source alarm panel or as common repeat alarm unit for all Wayscale alarm systems. 

The larger LHM 8 is designed to monitor up to eight alarm sources and can be banked in an Alarm Centre cabinet to monitor 16 and 24 alarm sources. Notations for the alarms are individual and comprise of a reverse screen printed label. Battery backup is optional on LHM 8, 16 and 24 Units but is not available as standard on the LHM1 Units. Either system can be accommodated in an optional metal cabinet and can be provided with an integral Autodial Unit.

LHM1 utilises a 12V DC signal for linking to the remote alarm source, whereas LHM 8/16/24 units utilise 24V DC. Alarm sources would normally be a no-volt relay or switch and should be connected to 'normally open' no-volt contacts. When the contacts close, the light/s and horn on the LHM activate. The light remains on all the time that the alarm source remains in alarm. The horn can be muted by pressing the mute button. As each alarm way is independent, the horn reactivates after any previous muting operation. All units are fully self re-setting.

LHM1 units have two sets volt-free output alarm contacts (rated 240V AC 3amp). The LHM8 has a common alarm relay with contacts (rated at 28VDC 1 amp). Should individual output alarm signals be required, each alarm can be fitted with an optional output relay with volt free contacts (rated 28 DC 1 amp) to repeat to a further LHM8 Unit. The LHM8 can be used as an audio/visual data gathering module which indicates individual alarms to a BMS System.