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

Product discontinued.
For new projects, please use replacement model available in 2022.

CDT-TX-02M-R and CDT-RX-02M-R are CE certified radio modules operating in the 434 MHz ISM band. In addition to the high performance narrow band FM (MSK) radio unit, the modules include switch signal input / output processing circuits allowing switch signals to be transmitted and received without the addition of external circuits. Six input and output terminals are available. Four selectable channels are preprogrammed.



  • 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 -120 dBm
  • 6 switching signal transmission
  • 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


2.4 GHz Telecommand Module


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 -120 dBm BER 1%
Outputs 6-photo MOS relay outputs
Output relay Max. 48 V, 100 mA AC/DC
Operating mode One-shot, Toggle, Keying, 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 16 mA (6 outputs off)
50 mA (6 outputs on)
Dimension 53 x 35 x 12mm 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 1.2 PDF

Operation Guide

Version 2.0 PDF

Supplementary Information

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

Parts Change Notice (PCN)

PCN2031001  (Jun. 2020) PDF

Product Discontinuation Notice (PDN)

PDN1907002  (Jul. 2019) YouTube

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

Operation Guide

Version 1.1 PDF

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-02M-R 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-02M-R. Please make sure to order them if needed.The boards can be used for both CDT-TX/RX-01 and CDT-TX/RX-02M-R.


  • 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.