Stonegate Door Open Alarm 276A
Stonegate Instruments Door Open Alarm for Coldrooms
The Stonegate Instruments Door Open Alarm is a large, loud warning device designed to alert staff when a coldroom door has been left open for an extended period. A flashing beacon combined with high-output sounders provides a clear visual and audible warning to help protect stock, reduce energy loss, and maintain temperature control.
The unit features an adjustable delay, allowing activation times of up to 30 minutes. Sounders can be delayed or independently disabled to suit site requirements. The alarm is now supplied with a magnetic door contact as standard.
Specification:
- Visual: 1W LED strobe with red dome beacon, 100 flashes per minute
- Audio: 2 x 100dB piezo sounders, 3kHz pulsed at 2Hz
- Timer: Approx. 0–60 seconds or 1–30 minutes adjustable delay
- Enclosure: Light grey ABS
- Dimensions: 120mm x 122mm x 90mm
- Supply: 230VAC, 40mA drain, 100mA internal fuse, or 12VAC/DC, <350mA peak
- Relay output: Normally energised volt-free changeover, rated 230VAC, 2A resistive
- Main connectors: 5mm pitch screw terminals, up to 2.5mm cable
- External switch input: Volt-free, 12V rated, normally open or normally closed
- Secondary connectors: 3.81mm pitch screw terminals, up to 1.5mm cable
- Supplied with magnetic contact
Suitable for commercial coldrooms and refrigerated areas where door monitoring and alarm indication are required. Supplied by Absolute Coldroom.
Additional resources: Door Open Alarm PDF
