Circuit Design's RF modules contain all the high frequency components required for transmitting data. All these components are shielded by the metal case.
Specific protocols are not incorporated. Your own original protocol can be used, but must follow the requirements of maximum pulse width.
Digital coding such as Manchester coding is recommended for meeting the maximum pulse requirement. 

Common specs : Narrow band radio 25 kHz step / EN300220, EN301489 compliance / FSK modulation
Model	CDP-TX04S CDP-RX-03AS	CDP-TX-02(A)N(P) CDP-RX-02(A)N(P)	STD-302	STD-402TR
Click the image for details
Type	Transmitter Receiver	Transmitter Receiver	Transceiver	Transceiver
CE certificate	Yes	Yes	Yes	Yes
RF
Frequency	433.920 MHz 434.075 MHz 869.750 MHz	434 MHz band 458 MHz band	434 MHz band 869 MHz band	434 MHz band
Channel	1	32 (434 MHz) 11 (458 MHz)	Programmable	64
Ch span	25 kHz	25 kHz	25 kHz	25 kHz
RF power	10 mW (434 MHz) 5 mW (869 MHz)	5/10 mW selectable	10 mW (434 MHz) 5 mW (869 MHz)	10 mW
Data input	Digital  (max.pulse width 20 ms)	Digital  (max.pulse width 20 ms)	Digital  (max.pulse width 5 ms)	Digital  (max.pulse width 20 ms)
RX Sensitivity	-120 dBm (434 MHz) -117 dBm (869 MHz)	-120 dBm	-119 dBm (434 MHz) -116 dBm (869 MHz)	-117 dBm
Data rate	4800 bps	4800 bps	9600 bps	9600 bps
Supply power
Supply voltage	2.2 to 5.5 V (TX) 3.0 to 14 V (RX)	2.4 to 12 V (TX) 3.6 to 12 V (RX)	3.0 to 5.5 V	3.6 to 12 V (Direct) 3.6 to 5 V (Auto)
Supply current	22 mA / TX 18 mA / RX	30 mA / TX 26 mA / RX	40 mA / TX 26 mA / RX	36 mA / TX 26 mA / RX
Operating temp. range (C.)	-10 to 60	-10 to 60	-20 to 65 (434MHz) -15 to 60 (869MHz)	-10 to 55
Physical dimensions
Size (mm)	22 x 12 x 6 / TX 36 x 26 x 8 / RX	36 x 26 x 10 / TX 50 x 30 x 9 / RX	50 x 30 x 9	53 x 35 x 12
Weight	3.4 g / TX 12 g / RX	12.5 g / TX 19 g / RX	24 g	34 g

 
 

MU-1 and CCR (Command Controlled Radio) unit provide simple dedicated commands for modem control and the data communication. By using dedicated commands, you can change the RF channel, System ID and UART parameter, and make the data transmission easily. Optional interface boards are available for the CCR and the MU-1 

MB-STD-RS232 is a command-less RS232 transparent radio modem. 
RF channel and ID can be set with the onboard dip switch.

Common specs : Narrow band radio 25 kHz step / FSK modulation                            EN300220, EN301489 compliance
Model	MU-1	CCR-STD-302	MB-STD-RS232
Click the image for details
Type	Transceiver modem	Transceiver modem	Transceiver modem
Interface
Synchronization	Asynchronous/UART	Asynchronous/UART	RS232
Max. data rate	57.6 kbps	57.6 kbps	9.6 kbps
Flow control	RS/CS hardware	RTS/CTS hardware	RTS/CTS hardware
Max. data size per  transmission	255 Byte	255 Byte	64 Byte
Data buffer		255 Byte/TX 255 Byte/RX	2048 Byte/TX 2048 Byte/RX
RF
RF module equipped		STD-302	STD-402
Frequency	434 MHz band	434 MHz band 869 MHz band	434 MHz band
Channel	64	64 (434 MHz) 80 (869 MHz)	64
RF power (mW)	10 mW	10 mW (434 MHz) 5 mW (869 MHz)	10 mW
Radio data rate	9600 bps	9600 bps	9600 bps
Supply power
Supply voltage	3.0 to 5.0 V	3.3 to 5.0 V	4 to 9 V
Supply current	46 mA /TX 32 mA /RX	45 mA /TX (434 MHz) 30 mA /RX (434 MHz) 43 mA /TX (869 MHz) 30 mA /RX (869 MHz)	60 mA /TX 50 mA /RX
Operating temp. range	-20 to 60	-10 to 55	-10 to 55
Mechanical dimension
Size (mm)	50 x 30 x 9	53 x 35 x 15.1	85 x 53 x 15
Weight	23.5g	38 g	70g
Interface board
	RS232C interface USB interface LAN interface	RS232C interface

 
 

These radio modules are built with RF circuitry, with the interface circuit matched with the specific application.
The telecommand radio module CDT is designed to meet the requirements of switching signal transmission for Telecotrol applications.
The wireless audio module is designed to meet the requirements of high quality signal transmission for audio applications.

Model	CDT-TX-01 CDT-RX-01		Model	WA-TX-01 WA-RX-01A
Click image for the details			Click image for the details
Type	Transmitter Receiver		Type	Transmitter Receiver
Application	Switching signal transmission		Application	Audio signal transmission
Interface			Interface
I/O	6 switch input /output		I/O	Analogue input/output
RF			RF
Frequency	434.075MHz		Frequency	863.125MHz 864.625MHz 864.500MHz 864.875MHz
Channel	1		Channel	1
RF power	10 mW		RF power	2 mW
Modulation	MSK		Modulation	Variable reactance modulation
Tech. standard	EN 300 220 EN 301 489		Tech. standard	EN 300 422 EN 301 489
			Freq. response	50Hz to 15kHz
			S/N	90dB
Supply power			Supply power
Supply voltage	2.2 to 12.0 /TX 3.0 to 12.0 /RX		Supply voltage	3 to 9 /TX 3 to 12 /RX
Supply current	25 mA /TX 1 uA /Stand-by 25 mA /RX		Supply current	25 mA /TX 30 mA /RX
Operating temp. range	-20 to 60		Operating temp. range	0 to 50
Mechanical dimension			Mechanical dimension
Size (mm)	36 x 26 x 8 / TX 53 x 35 x 12 / RX		Size (mm)	27 x 19 x 5.5 / TX 36 x 26 x 8 / RX
Weight	15g/ TX 35g/ RX		Weight	5g /TX 15g /RX