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Help Center433mhz 2w Radio Lora Transmitter Module Ttl Rs485 Rs232 Lora rf Module 433 Transceiver Lora Long Range Wireless Communication
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Specifications:
Products Features:
● Support UHF(410-470MHZ) user programming;
● RS-232 and RS-485 ttl customized;
● Serial data rate 1200-9600bps settable，air data rate 240-9600bps settable by user;
● Short Transmitting-receiving transfer time; communication delay less than 3Ms;
● 3km-30Km LOS long range transmission distance;
● The highest sensitivity up to -136dBm;
Technical Parameters:
Frequency Range |
410-470MHZ |
|
Frequency stability |
≤±10PPm |
|
Transmit Power |
2W |
|
Modulation |
Lora | |
Air Data Rate |
240-9600bps |
|
Interface |
RS232&RS485(TTL customized) |
|
Power Supply |
5V@2A(8～36V customized in factory) |
|
Interface Data Format |
8E1/8N1/801 |
|
Transmission Distance |
3km-30km line of sight (if Antenna is put at above 2m height) |
|
Receiving Sensitivity |
-136dBm@240bps/-120dBm@9600bps |
|
Channel Bandwidth |
125KHZ@240bps/250KHz@9600bps |
|
Working Temperature |
-40℃～80℃ (industrial grade) |
|
Working Humidity |
10% to 90% relative humidity, no condensation |
|
Emission Current |
≤1.5A(Max Output Current is not less than 2A) |
|
Receiving Current |
≤80mA |
|
Dimension(L/W/H) |
86 X 45 X 20 mm |
|
Weight(g) |
≤500g |
|
Pin Definitions
Pins |
XZ-DT78-LX |
Remark |
|
DB9 Male Connector |
1 |
VCC (+5V) |
5～36V customized |
2 |
RS-232/RXD |
||
3 |
RS-232/TXD |
||
4 |
GND |
Grounding of power supply |
|
5 |
AGND |
Signal Ground |
|
6 |
RS-485/A |
||
7 |
RS-485/B |
||
8 |
SET_EN（Set Enable） |
||
9 |
SQ（Receiving Signal Indicator） |
XZ-DT78-L Frequency
Default frequency channel is CH0,frequency of the 0 channel can be arbitrarily set and saved by the software. Users can input/rewrite any needed Rx and Tx frequency in the software.
Software Programming
1.1 Enter setup mode
Hardware: connect the 8th foot with Ground and green led keeps lighting, the module enters setup mode, serial port rate is 9600 8N1
Software: at the current baud rate, 3 + numbers are sent continuously, XZ-DT78 enters setup mode, and the serial port output is OK
Format + + +
Return OK
1.2 Channel 0 Frequency Setting(this frequency is the working frequency of 0 channel
Format >WF0/RX:453.25000/TX: 453.25000
Return Explain >WF0 means working frequency of writing channel 0 RX: means receiving frequency 453.25000 MHz, please notice frequency needs be accurate to 5 digits after the decimal point； TX: means transmitting frequency 453.25000 MHz, please notice frequency needs be accurate to 5 digits after the decimal point； The same XZ-DT78 receiving and transmitting frequency setup can be the same or different, but modules in the same communication system must have the same receiving and transmitting frequency. Dip Switch can only set frequency in Channel 0. 1.3 Interface Baud rate setup Format >WBA Return <1200l> <8n1> <1200> <8n1>
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