A high-quality base sounder/visual alarm device for use with C-TEC’s HP508 Hush-Pro BS5839-6 Grade C Controller. 92dB(A) sound output. Certified to EN54-3, 23 & 17 by the LPCB. 460µA-12.5mA quiescent current. 14.5mA alarm current (VAD lit, sounder on max). White ceiling fixing plate & detector spur wires included for optional connection to a Hush-Pro detector/base allowing it to be used as part of stacked sounder/VAD/detector/base combination. Optional BF330CTLIDW white or BF330CTLIDR red cap available for stand-alone use. IP21C rated. Up to 16 field devices (detectors, sounders and/or I/O units) per Controller.