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Hochiki ESP Analogue Dual Relay Controller with DIN Rail Option



Model CHQ-DRC2(SCI) is a Dual Relay Controller designed to provide two generalpurpose relay outputs, each output can be driven separately for control of such devices as dampers or for control of plant and equipment shutdown. The monitored input can be used for local power supply fault monitoring or as a general-purpose input.

The unit is also available as a DIN Rail mountable version; both models feature an integral short-circuit isolator. The CHQ-DRC2(SCI) utilises simple DIL switches for reliable addressing. A back box is also available (CHQ-BACKBOX) which, when used in conjunction with the CHQ-DRC2(SCI), increases the IP rating to IP65. 

Key Features

  • Loop powered
  • Single loop address
  • 2 Independently controlled changeover relays
  • Relays contact rated at 30 V dc at 1 A
  • Auxiliary monitored input
  • DIN-Rail version available
  • Both models feature an integral short-circuit isolator
  • Both models approved by LPCB


  • Operating Voltage : 17 – 41 VDC
  • Current in Short Circuit : 8mA
  • Current Consumption : 22mA +- 20% (Polling) 4.3mA (Both Inputs Active)


Additional information

Weight 0.1 kg

Standard, DIN Rail

Device Type



System Type

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