Project Description


Compact-M R20

Compact receiver with 8-35 V / DC. The receiving unit has 12 PWM outputs, 8 digital outputs and 4 digital inputs or 2 analog inputs. In addition, there is a positively driven emergency stop relay. The Compact-M R20 offers 2 CAN interfaces and one RS232 interface. An RS485 is also available.

  • voltage: 8 -35 V/DC
  • small, compact and robust housing design
  • protection class IP 65
  • CE
  • individual solution adaptation according to specifications.
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Data Sheet
Power supply 8–35 V/DC
Max. Switching current 4A
Outputs up to 12 PWM outputs + 8 x digital
+ up to 8 Danfoss outputs (see options)
Inputs 4 x digital
Emergency stop relay forcibly managed
Antenna integrated or external
Weight 800 g
Interface RS232, RS485, 2 x CAN-Bus



The teach-in function enables an optimized utilization of the joystick movement. By setting the min/max values on the transmitter side, the maximum move of the joystick is optimally utilized. As a result there are no longer any dead joystick motions. Even a minimum deflection of the joystick causes the immediate opening of a valve.

Multi-user system

The multi-user system enables radio communication between several transmitters and several receivers. Each transmitter can be optionally operated with several receivers at a workplace and / or vice versa. Provided that this connection is not otherwise used at this moment.


The safety risk is significantly reduced using the RADIOKEY. Here a defined range is available for the crane or machine operator in which the remote control system can be activated. As a result, unwitting or inadvertent activation of the transmitter is excluded and the receiver is not sent any control information.

Data reporting

Visual representation of Operating Range, Transmission signal strength, Status of the machine function and Customer-specific information as well as logos supplemented by acoustic feedback (buzzer can be activated).