Sonos Pulse wall mounted Visual Alarm Devices are available as fire beacons or combined sounder beacons. **White flash: EN54-23 coverage W-3.1-11.3 **Red flash: EN54-23 coveraSonos Pulse wall mounted Visual Alarm Devices are available as fire beacons or combined sounder beacons. With an EN54-23 approved coverage pattern of W-3.1-11.3, each Sonos Pulse wall mounted device can be mounted up to 3.1m high and can cover an 11.3m x 11.3m square room with a single device.ge W-2.4-7.5
