HC-11 433MHz wireless RF serial UART module CC1101 5V 3V AT command

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Quick Details
Place of Origin:
Guangdong, China (Mainland)
Brand Name:
Model Number:
Bluetooth Module
3.3V ~ 5V
Module size:
27.8mm x14.4mm x4mm
100% brand new

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Selling Units:
Multiple of
Package size per batch: 
12X8X6 cm
Gross weight per batch:
0.5 KG
Package Type:
standard package
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Quantity(Piece) 1 - 1000 >1000
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HC-11 433MHz wireless RF serial UART module CC1101 5V 3V AT command





1:3.4 ma silent current ultra-low power consumption.

2: distance, using distance 1 ~ 40M. (Less than 1M, the module does not work).

3: Support wide voltage 3.3V ~ 5V

4: Support for serial pass-through mode, replace the serial line (half duplex)

5: IO support level to follow, also means that you can transfer the digital level models.

6: Support level IO latch mode

7: You can set the frequency, set the address, such as dozens of commands, automatic filtering

8: Module size: 27.8mm × 14.4mm × 4mm.

9: suitable for network design



1.33MHz ordinary wireless, open channels, serial pass-through. To-many, many-to-many transmission. Five foot pin, easy to use.

Configuring pin. Left unconnected.

3 factory default baud rate: 9600, modules to each other.

3 In 2400, 4800 baud, you can STC microcontroller wireless remote upgrade and download the program.




Two ways to enter AT command mode
The first: After switching voltage of 3.3V, then the fifth pin is pulled low (has been low), the module is in AT command mode, pulled exit command mode.
The second: power outages, fifth pin first then low again on the power, over 1S after entering the AT mode, pulled exit command mode.
Command as follows:
1. AT
      Send this command will return OK characters.
      Example: the AT Returns OK
2. AT + V
      Module returns the version information.
      Example: send AT + V returns HC-11_V0.0
3. AT + Bxxxx
      The baud rate is set to xxxx. This value can be 2400, 4800.
      Example 1: send AT + B4800 return OK-4800
      Example 2: send AT + B115200 return OK-115200
4. AT + Cxxx
      Set the communication channel. From 001 to 127 is optional.
      Example: send AT + C058 returns OK-058
5. AT + FUx
        Switching serial pass-through mode. 1 to 4 the value x is optional.
        Example: send AT + FU1 return OK + FU1






Wireless serial module HC-11 with the computer serial port connection






Wireless serial module HC-11 with 3.3V single-chip connections







wireless serial module HC-11 with 5V MCU








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