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The RCD21 open-collector receiver module allows existing controllers and devices to be upgraded or combined with a wireless interface.

32 transmission codes can be paired with each open collector output. Open collector outputs activate the selected mode accordingly. A transmission code can be paired with any number of outputs.

The programming is retained even in the event of a power failure. Only four OC outputs are used for activating the “Battery Low” RCD21 variant.

A Battery Low output (BL) is allocated to each switching output. This BL output signals low voltage telegrams by switching the corresponding output for one second.

RCD21E500xAxx
Technical specifications
Coding not necessary, unit ”learns” transmission code
Up to 32 transmitters per OC channel can be learned.
Conformity EN 300 220
Frequency 868.30 MHz
Power supply 3-8 V DC or 8-36 V DC
Power consumption RCD21E5004A01: max 28 mA

RCD21E5004A02:
8 V: 25 mA
12 V: 30 mA
24 V: 20 mA
36 V: 20 mA
Output 8x Open-Collector
Max. Contact Duty per OC 20 mA
Control ON/OFF (2-button operation)
ON/OFF (1-button operation)
DEAD MAN (1-button operation)
Operating temperature -20 °C to +60 °C
Dimensions 35 x 35 x 5 mm, RM 2,54 mm, pin length 3,2 mm
Scope of delivery
  • Receiver module open-collector
  • Operating manual
Models
Product numbers Description
RCD21E5004A01-EP Receiver module open-collector 4 channel, Easywave 868,3 MHz, 3-8 V DC Battery Low
RCD21E5004A02-EP Receiver module open-collector 4 channel, Easywave 868,3 MHz, 8-36 V DC Battery Low
RCD21E5008A01-EP Receiver module open-collector 8 channel, Easywave 868,3 MHz, 3-8 V DC
RCD21E5008A03-P Receiver module open-collector 8 channel, Easywave 868,3 MHz, 8-36 V DC
Wiring diagram

RCD21E5004Axx-EP
RCD21E5008Axx-EP