Neptune 4-in-1 combination of siren, buzzer, LED strobe and LED to provide alarm and indication of door status.
Sound pressure level selectable.
LED colour: blue (standard) or red (part number NE41R).
Standard GPO back plate; also can be fit in a standard mounting block (35 mm).
Siren and strobe: door forced open alarm.
Buzzer: door open or held open beyond the permitted time duration.
LED steady: door status (open or close).