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Binary inputs unit. 2-channels IM3-20B


EAN: 8595188132305 | Code: 3230 standard


  • Binary input unit IM3-20B is used for the connection of 2 devices with potential-less contacts (switches, buttons, switches of other designs, PIR detectors, fire and gas detectors, etc.).
  • Part of the inputs can be used as a balance for alarm detectors: IM3-20B – inputs IN1, IN2
  • Contacts of external devices connected to the inputs of the unit can be NO or NC - Input parameters are configured in the software iDM3.
  • Within the internal EZS configured in the iDM3 software, inputs must be set to balance or double balance.
  • The units generate a supply voltage of 12V DC / 75 mA for powering external intrusion detectors, so they can power PIR detectors, fire and gas detectors.
  • Active use 12 V DC output for powering detectors increases the nominal consumption of units from BUS (see technical data).
  • The units can be used for counting pulses of energy meters with pulse output.
  • The units are equipped with a temperature input for connecting an external two-wire temperature sensor TC/TZ (see accessories).
  • IM3-20B in case type B is designed for mounting into an installation box.


  • Number of inputs: 2x binary
  • Temperature sensors: 1x TC/TZ
  • Supply voltage: BUS 27 V DC
  • Rated current from BUS: 20 mA (at 27 V DC)
  • Housing: BOX
  • Dimensions: 49 x 49 x 13 mm


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