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433MHz Rf DTU Wireless RS485 Transceiver LoRa SX1278 Uhf Module rf Transmitter Receiver

Basic Information
Place of Origin: China
Brand Name: Lensen
Model Number: LS-LR-DTU30
Minimum Order Quantity: 2pcs
Price: Negotiation
Packaging Details: standard carton
Delivery Time: 2-6 days
Payment Terms: Western Union, T/T
Supply Ability: 6000pcs/month
Power Output: 1W Distance: 5km
Port: RS485 Enclosure: Aluminum
Color: Black Chip: SX1278
High Light:

lora wireless module


lora gateway module

433MHz Rf DTU Wireless RS485 Transceiver LoRa SX1278 Uhf Module rf Transmitter Receiver



DTU introductions


LS-LR-DTU30 is a 433MHz,1W industrial-grade wireless data transmission unit with high stability. The DTU uses SX1278 main chip, LORA spread spectrum transmission, RS232/485 level output. The DTU adopts the efficient cyclic interleaving error correction coding algorithm, which has high coding efficiency and good error correction ability. In the case of sudden interference, the DTU can correct the interrupted data packets, and the maximum continuous error correction is 64bit, which greatly improves the DTU’s Anti-jamming ability and transmission distance, and in the absence of error correction algorithm, this error packet can only be discarded. Using LORA spread spectrum technology makes the module have a longer communication distance.


LS-LR-DTU30 has two kinds of operation modes and can be switched when needed. Transparent transmission mode is use for data transparent transmission. Configuration mode is use for changing the communication parameters of the DTU.


LS-LR-DTU30 operating frequency is 410MHz ~ 441MHz, a total of 32 channels, each channel’s interval is 1M.


Electrical Parameter:

No. Item Parameter details Description
1 Size 82 * 62 *25mm Without antenna
2 Weight 133g Without antenna
3 Frequency band Default: 433MHz


channel: 32, 433±5MHz (recommended )

4 Housing Aluminum alloy Black
5 Connector




Standard DB9, hole

6 Supply voltage 8 ~ 28V DC Note: the voltage higher than 28V is forbidden
7 Communication level RS232/RS485 Available for RS232 and RS485
8 Operation range 3000m

Test condition: clear and open area & 20dBm, antenna gain: 5dBi, height:> 2m,

air data rate: 2.4kbps

9 Transmitting power Maximum 30dBm About 1W, can be configured to 20, 17, 14, 10dBm
10 Receiving sensitivity -130dBm/2.4kbps Sensitivity has nothing to do with baud rate and timing
11 Air data rate 2.4kbps Can be configured to 0.3, 1.2, 2.4, 4.8, 9.6, 19.2kbps
12 Standby current 14mA Mode 3(power supply: 12V)
13 Transmitting current 126mA/20dBm >300mA (recommended)
14 Receiving current 28mA 12V
15 Communication interface RS232/RS485

8N1, 8E1, 8O1

Eight kinds of UART baud Rate, from 1200 to 115200 bps (default: 9600)

16 Driving mode RS232/RS485 Can be configured to push-pull/high pull, open-drain
17 Transmitting length 512 bytes buffer 58 bytes per package
18 Receiving length 512 bytes buffer 58 bytes per package
19 Address 65536 configurable addresses Easy for network, broadcast and fixed transmission
20 RSSI support Built-in intelligent processing -
21 Antenna type SMA-K External thread hole
22 Operating temperature -40 ~ +85℃ Industrial grade
23 Operating humidity 10% ~ 90% Relative humidity, no condensation
24 Storage temperature -40 ~ +125℃

Industrial grade



DTU factory setting


DTU type number

working frequency


ID address


Factory channel

Air rate


Serial port rate


Serial port format

Transmitting power


LS-LR-DTU30 433.00 0x1234 23channel 2.4 9600 8N1 1000



Working modes


The module has two operating modes, which can be observed by RESET indicator, details are shown in the following table:

modes(0-1) RESET indicator light Mode introduction Remarks
0 transparent transmitting mode off Serial port open, wireless open, transparent transmission The receiver must be in mode 0


1 configuration mode

on DTU parameters can be configured For more details please see the working parameters

433MHz Rf DTU Wireless RS485 Transceiver LoRa SX1278 Uhf Module rf Transmitter Receiver 0

Contact Details

Phone Number : +8613826574847

WhatsApp : +8613826574847