2N® Helios Uni

An intercom for all analogue telephone lines

The 2N® Helios Uni is a door intercom for voice transmission and door operation using an analogue telephone line. The communicator operates on the principle of an analogue telephone and can therefore be integrated into a company’s current telephone system. The door intercom simply has to be connected to an analogue exchange, with no need to change the current infrastructure or buy additional products.

Product highlights:

The 2N® Helios Uni analogue door communicator can be easily integrated into an environment with an existing telephone infrastructure. It can be connected to any analogue exchange, GSM gate or directly to a landline (PSTN).

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Analogue door intercom 2N® Helios Uni


  • Explanation:
    Data in brackets express conditions when values are reached
  • Minimum required on-hook line voltage
    20V (Hang-up)
  • Minimum required off-hook line current
    15 mA (Off-hook)
  • Bandwidth
    300 to 3500 Hz (20 to 60 mA)

Other Parameters

  • Switch – max. voltage
    48 V AC, DC
  • Switch – min., voltage
    9 V AC, DC
  • Switch – max. current
    2 A AC, DC
  • Backlight – rated voltage
    12 V
  • Backlight – max. voltage
    14 V
  • Backlight – current consumption
    max. 5 mA
  • Overvoltage protection – common mode
    1000 V (8 / 20 μs)
  • Operational temperature range
    -25 to + 55 ºC
  • Coverage
    IP 54
  • Dimensions (1 module)
    193x115x39 mm (HxWxD)
  • Weight
    up to 500 g
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