DRC DUAL RELAY MODULEModel DRC is a Dual Relay Controller, which is fully compatible with Hochiki’s ESP analogue addressable protocol.

It has been designed to provide two general purpose relay outputs, each output can be driven separately for control of such devices as dampers or for control of plant and equipment shutdown.

A general-purpose auxiliary input is provided which is fully monitored for short and open circuit, the monitoring can be disabled with bit 8 on the DIL switch.

The DRC utilises simple DIL switches for reliable addressing and it is available in either an OEM version (as illustrated above) or complete with an IP65 rated enclosure.

  • Single Loop Address
  • Loop powered
  • 2 independently controlled relays
  • Relay contacts rated at 30vDC at 1 Amp
  • Auxiliary monitored input
  • Approved to EFSG for line units
  • Integral Short Circuit Isolator
SPECIFICATIONDRC, DRC/A (with enclosure)
Ordering Code DIN RailDRC/DIN (DIN Rail version)
Operating VoltageLoop 17-41 Vdc
Quiescent Current300μ A
Transmission MethodDigital Communications Using ESP
Relay contact rating30vDC at 1 Amp
Operating Temp. Range-10°C to + 50°C
Storage Temp. Range-30°C to + 60°C
Input Threshold LimitsON = 470Ω, Short cct <50Ω, Open cct >100kΩ, EOL 10kΩ
ApprovalsLPCB & VdS