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Description
BDD RT38B01 UHF DTU TRANSCEIVERThe RT38B01 is a UHF DTU (Data Terminal Unit) RS485 BUS RF Serial Port UART Transceiver Module, Operating in the 433 458MHz Frequency Range. RS485 BUS RF Serial Port UART Transceiver Module Overview Module features Long distance wireless transmission (up to 500 meters in open area , 10kbps baud rate in the air ) Operating frequency range ( 433 458. 5MHz , up to 255 communication channels) Maximum 100mW ( 20dBm ) transmit power ( 10 levels of power can
The RT38B01 is a UHF DTU (Data Terminal Unit) RS485 BUS RF Serial Port UART Transceiver Module, Operating in the 433-458MHz Frequency Range.
RS485 BUS RF Serial Port UART Transceiver Module
Overview
Module features
Long-distance wireless transmission (up to 500 meters in open area , 10kbps baud rate in the air )
Operating frequency range ( 433 - 458.5MHz , up to 255 communication channels)
Maximum 100mW ( 20dBm ) transmit power ( 10 levels of power can be set )
Built-in MCU, use serial port to communicate with external devices
Send 31 bytes at a time
The module can support one-to-one, one-to-many transparent transmission communication through ID setting Changing the baud rate of a different serial port will synchronously change the rate at which data is sent over the air. ( 10kbps-100kbps)
Set the ''critical three minutes''. The module can send and receive data normally within three minutes of power-on. You can send the AT command '' AT+ENABLE=1 '' to make the module enter the AT command state for parameter setting. There is only this reserved word in these three minutes. After more than three minutes, you will not be able to enter the AT command mode, you can only send and receive data, '' AT+ENABLE=1'' will also be sent out as data, there are no reserved words at this time.
Long-distance wireless transmission (up to 500 meters in open area , 10kbps baud rate in the air )
Operating frequency range ( 433 - 458.5MHz , up to 255 communication channels)
Maximum 100mW ( 20dBm ) transmit power ( 10 levels of power can be set )
Built-in MCU, use serial port to communicate with external devices
Send 31 bytes at a time
The module can support one-to-one, one-to-many transparent transmission communication through ID setting Changing the baud rate of a different serial port will synchronously change the rate at which data is sent over the air. ( 10kbps-100kbps)
Set the ''critical three minutes''. The module can send and receive data normally within three minutes of power-on. You can send the AT command '' AT+ENABLE=1 '' to make the module enter the AT command state for parameter setting. There is only this reserved word in these three minutes. After more than three minutes, you will not be able to enter the AT command mode, you can only send and receive data, '' AT+ENABLE=1'' will also be sent out as data, there are no reserved words at this time.
How to use (>=2pcs):
- 1 2PCS,Module 1 and Module 2 send data to each other.
- 2 >=3PCS,One as master device, the other as will be as slave device.
the way they work as well as wired RS485 bus. Master device transmit data, Slave devices all receive data.Any slave device transmit data, master device and the other slave devices can receive .When ever only allowed one device (master or slave) to transmit data.
Features
Application
- IP PTZ Camera
- Modbus modbus temperature sensor
- LED Controller
- R4D3C32 N4D8B08 N4D8C12 RS485 Relay
- Remote control, remote measurement system;
- Wireless meter ;
- Smart Home,Home Automation ,Wiser Home;
- Access control ;
- Smart meter
- Identification system ;
- Data collection;
- IT household appliance ;
- Intelligence household appliance;
- Baby monitoring system;
- Thermometer
Specifications
- Working voltage : 4.5V-5.5V;
- Interface : RS485(5V GND A+ B-)
- Frequency : 433MHz
- Transmit power : -40~+20dBm;
- Receiver sensitivity : -114dBm;
- Operating temperature : -25℃~+75℃;
- Transparent transmission mode baud rate : 1200 2400,4800,9600(Default),19200;
- Open ground Transmission distance : 500M
- Size(without antenna) : 74x24x16mm
- Weight(without antenna): 18g
Additional Information
| Device | Transceiver Module |
| Type | RS485 | BUS | RF Serial Port | UART |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 1597 reviews
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Product Reviews
★★★★★ 1
Not strong. Didn't last
Color: Large size (7.9")
Was ripped apart very quickly. Not strong. Would not buy again
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Reviewed in the United States on May 10, 2026
★★★★★ 4
Keeps her busy!
Color: Medium size (5.9")
Our Molly loves this. Only thing is that it is a little too big for our Maltipoo, but she still tries to keep up with it.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Tough
Color: Medium size (5.9")
So far my dog hasn’t destroyed it! And it’s been a month. So I call that a win. Plus he loves it.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Picky dog approved!
Color: S6-muti-color, Color: S6-muti-color
I have wasted so much money on dog balls that they won't even pick up! They finally were obsessed with the Kong rubber green/blue or red/blue ones, but they're $3+. each, and they break from the dogs squishing it. I honestly had zero expectations on these, and they BOTH picked them up on the first throw! That's huge!!
Seem to work fine in the ChuckIt.
As for the squeaker, at first I was like "Oh nooooo." when they both loudly started! Much to my (and my neighbors') happiness, the squeakers stopped working after a couple minutes. 🤣
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Reviewed in the United States on February 2, 2025
★★★★★ 5
Great dog toys
Color: S6-muti-color
These are long lasting, durable dog toys. My dogs love the squeak sound.
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Reviewed in the United States on May 23, 2026