Multi Channel Telecommand Transmitter and ReceiverCDT-TX-02M-R, CDT-RX-03M


CDT-TX-02M-R and CDT-RX-03M are CE certified radio modules operating in the 434 MHz ISM band. In addition to the high performance of the narrow band FM (MSK) provided by the radio modules, the CDT-TX-02M-R and CDT-RX-03M include all the necessary components for processing switching signals allowing them to be transmitted and received without the addition of external circuits. The modules provide 6 switching inputs/outputs and feature four selectable preprogrammed RF channels.



  • 10 mW RF output power
  • TX 2.2 V to 12 V @ 27 mA, 1 uA at stand by
  • RX 3.0 V to 12 V operation
  • MSK modulation
  • Receiver sensitivity -117 dBm
  • 6 switching signal transmission and reception
  • RED compliant (EN 300 220)
  • 426 MHz version available (Japan)


  • Remote control applications
  • Emergency light
  • Alarm systems
  • Start / Stop control for motor operated equipment

Other products related to this product

Private: CDP-TX-05M-R, CDP-RX-05M-R

Compact Multi Channel Transmitter and Receiver (4 Channels)



Parameter Specification Remarks
Applicable standard EN 300 220
Communication method One way
Emission type F2D Sub-carrier MSK
Frequency 434.075 / 433.920 / 434.600 / 434.700 MHz
Number of RF channels 4 channels
RF bit rate 1,200 bps
Operating temperature range -20 to +60 degree C No dew condensation
Communication range 500 to 1,000m Line of sight

Transmitter Part

Parameter Specification Remarks
Transmitter type PLL controlled VCO
RF output power 10 mW
Inputs 6 Switch inputs Negative logic
Antenna 1/4 lambda whip antenna
Supply voltage 2.2 to 12 V DC Max. rating 14.5 V
Supply current 27 mA typ. (TX)
1 uA typ. (Stand by)
Dimension 36 x 26 x 8 mm Excluding protrusion
Weight 15 g

* Antenna, ANT-LEA-01-R, is included.

Receiver Part

Parameter Specification Remarks
Receiver sensitivity -117 dBm Level for stable operation
Outputs 6-photo MOS relay outputs
Output relay Max. 48 V, 100 mA AC/DC
Operating mode One-shot, Toggle, Switching, Continuous Set by 3 input ports
Antenna 1/4 lambda whip antenna
Supply voltage 3.0 to 12.0 V DC Max. rating 14.5 V
Supply current 19 mA (6 outputs off)
55 mA (6 outputs on)
Dimension 53 x 35 x 12 mm Excluding protrusion
Weight 35 g

* Antenna, ANT-LEA-01-R, is included.

External View


* Antenna, ANT-LEA-01-R, is included.


* Antenna, ANT-LEA-01-R, is included.


Data Sheet

Version 1.3 (434 MHz) PDF
Version 1.0 (426 MHz) PDF

Supplementary Information

Differences between CDT-TX-02M-R, CDT-RX-03M 434 MHz and CDT-TX-02M / CDT-TX-03M, CDT-RX-03M 426 MHz PDF
Application example video – Sensor and warning system
Telecommand transmitter and receiver, CDT-TX-02M-R and CDT-RX-02M-R 434 MHz

Product Discontinuation Notice (PDN)

PDN1907002  (Jul. 2019) YouTube

TB-CDT-TX-01 , TB-CDT-RX-01 (Test board)

Operation Guide

Version 1.2 YouTube

Evaluation Tools : TB-CDT-TX-01 , TB-CDT-RX-01

The test board will save your time and effort for evaluation of CDT-TX-02M-R and CDT-RX-03M modules. Communication range can be tested easily by checking the LEDs on the decoder board TB-CDT-RX-01.

TB-CDT-TX-01 and TB-CDT-RX-01 do not include modules CDT-TX-02M-R and CDT-RX-03M. Please make sure to order them if needed. The boards can be used for evaluation of the radio modules CDT-TX-01 with CDT-RX-01 or CDT-TX-02M-R with CDT-RX-02M-R / CDT-RX-03M.


  • 6-push buttons and output LEDs.
  • Dip switch for receiver mode setting.

External View


Board x 1


Board x 1
Battery holder




Lead antenna with plug

...more info


Rigid antenna with plug

...more info


434MHz antenna with extension coaxial cable for the receiver

...more info


Coaxial cable

...more info

Even in areas with no access to a power supply, the solar powered radio warning system ensures complete safety management in dangerous construction areas such as disaster prone areas and erosion control works.

CDT-TX-02M, CDT-RX-02M, WT-01

The construction area on the river and the general mountainous area around it carry a high risk of mudflow and landslides. While keeping construction workers safe, for the local residents in the area an emergency warning system that can immediately supply a warning is used.

Company name

Hokuyo Construction Co. Ltd.