Compatible with C-TECs entire range of ActiV firedetectors. Includesa1A @ 24 VDC relay controlled by detectors remote LED output. Ideal for switching CCTV, security and door retaining systems. Third-party certified to the relevant parts of EN54 in conjunction with our ActiV detectors. Easy to fit with lots of working space. Can be ceiling mounted in any orientation due to the true 360 degree viewing angle of the LED indicator strips on all ActiV detectors. Integrated detector/base locking mechanism, head removal tool and ID tag. Simple click and twist design. Remote LED terminals for the optional connection to a BF318 Remote indicator. C4408R non-diode relay base also available for use on systems that do not require head out monitoring.