Model CHQ-SZM2/M(SCI) is a Marine Approved Single Zone Monitor designed to allow up to 6 marine approved conventional detectors to be interfaced to Hochiki’s ESP analogue addressable system. The unit also features an integral short-circuit isolator. The CHQSZM2/M(SCI) utilises simple DIL switches for reliable addressing. A back box is also available (CHQ-BACKBOX) which, when used in conjunction with the CHQ-SZM2/M(SCI), increases the IP rating to IP65. The conventional zone on the CHQ-SZM2/M(SCI) does not support any line continuity options; if Call Points are being interfaced they should be wired at the beginning of the zone.