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).