AUDIBLE AND VISUAL INDICATING DEVICES.ELECTRONIC SOUNDER DESIGNED FOR USE WITH FIRE ALARM, SECURITY AND INDUSTRIAL SIGNALLING SYSTEMS..GENERAL FEATURES:. 32 – SIGNAL TONES SELECTABLE BY DIP SWITCH HIGH SOUND OUTPUT WITH LOW CURRENT CONSUMPTION VOLUME CONTROL AS STANDARD (0 – 20DB ADJUSTABLE) TWO SETS OF INPUT AND OUTPUT TERMINALS FOR EASY INSTALLATION .SERIES AH SERIES .DESCRIPTION ELECTRONIC SOUNDER AND ILLUMINATED BEACON .SUPPLY CURRENT 24 VDC .STANDBY CURRENT 14.5MA .INDEX PROTECTION IP IP44 .