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Hochiki ESP Dual Zone Monitor with SCI With DIN Rail Option



Model CHQ-DZM(SCI) is a Dual Circuit Zone Controller designed to allow up to 60 conventional detectors (30 on each zone) to be interfaced to Hochiki’s ESP analogue addressable system.  The unit also features a Schottky Diode line continuity option, when used inconjunction with the optional LCMU.

Full monitoring against malfunction or disconnection, together with a self-test feature through the ESP protocol, ensure the integrity of the CHQ-DZM(SCI) at all times.  The CHQ-DZM(SCI) utilises simple DIL switches for reliable addressing.  It is available as an OEM version (as illustrated above) and also as a DIN Rail mountable module
(CHQ-DZM/DIN(SCI)).  Both models feature an integral short-circuit isolator.

NOTE: When Resistive EOL option is chosen the conventional zone on the
CHQ-DZM(SCI) does not support any line continuity options, therefore if Call Points are being interfaced they should be wired at the beginning of the zone.

Key Features

  • Single loop address
  • Supports two independent zones of conventional detectors
  • Both zones fully monitored for short/open circuit
  • Requires an auxiliary 24 V dc supply
  • DIN rail version available
  • Both models feature an integral short-circuit isolator
  • Approved by LPCB


  • Operating Voltage : 17-41 VDC
  • Current Consumption : 2mA Quiescent, 71mA Both Zones in Fire
  • Resistance : 50Ohms Maximum
  • Current in Short Circuit : 8mA


Additional information

Weight 0.1 kg
Intrinsically Safe

No, Yes

Device Type


Standard, DIN Rail



System Type

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