User's Manual

T90-DTU User Manual
5
★ Note: The transceiver will be in poor communication when connected to multiple devices , it is recommended
to be connected to a single device, please try to use parallel 120Ω resistor between 485_A terminal and 485_B.
4. Technical specification
4.1. Model specification
Model No.
Frequency
TX power
Distance
Features
Recommended application
Hz
mW
km
T90-DTU
920M
7.9
5
LoRa，
anti-interference
Suitable for transmission of fast
speed in complex environment with
data interference over a long distance
Note: Test condition: in clear and open air without shelters, 12V /2A power supply, 5dBi gain sucker antenna over 2
meters height from the ground, with the factory default parameters.
4.2. General specification parameter
No.
Item
Value
Note
1
Size
82 * 62 * 25 mm
See more in 3.2. Dimensions
2
Weight
130g
±4.5 g
3
Temperature
-40℃～85℃
Meet industrial request
4
Antenna
impedance
50 Ω
Standard 50 Ω characteristic impedance
5
Supply voltage
+8 ~ +28V DC
It is recommended to use 12V or 24V
6
Communication
interface
RS232/RS485
Standard DB9 hole / 3.81 terminal block
7
Baud rate
Default 9600
From 1200~115200
8
Address
Default 0
65536 configurable address