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Product Name: RS485 Master-slave Network Transceiver Wireless Repeater FSK 433M 868M Uhf FR Module Board for Arduino UNO MCU STM32
 
 
 
 
 
 
 
 
 
 
Package inlcuded:
 
  1 PCS 433M 868M RS485 Master-slave Network Transceiver
 
 
 
 
 
 
Description:
Working voltage: DC 5V;
Working current: 6-40MA
Interface : RS485
Frequency: 433MHz/868MHz
Transmit power: -40~ 20dBm;
Receiver sensitivity: -114dBm;
Operating temperature: -25℃~ 75℃;
Transparent transmission mode baud rate :1200 2400,4800,9600(Default),19200;
AT mode configured baud rate fix is: 9600BPS;
Open ground Transmission distance : 500M
Size(without antenna): 58.5x30x13.8mm
Weight(without antenna):16.8g
 
 
 
 
 
 
 
For more information, please contact me
How to use (>=2pcs):
1 2PCS :
Ordinary wireless transmission
,Module 1 and Module 2 send data to each other.
 
2 3PCS :
Relay transmission,
Module 1 sends data, module 2 acts as a repeater (multiple repeaters can be used), and module 3 receives data; delay sending and receiving distance.
 
3 >=3PCS:
Master-slave network transmission
,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.
 
 
 
 
 
 
 
 
 
 
Application
PTZ Camera
Modbus modbus temperature sensor
LED Controller
RS485 Master-slave network transmission
Remote control, remote measurement system;
Wireless meter ;
Smart Home,Home Automation ,Wiser Home;
Access control ;
Identification system ;
Data collection;
IT household appliance ;
Intelligence household appliance;
Baby monitoring system;
 
 
 
433M Sucker Antenna:
 
Applicable Frequency : 315MHz/433MHz/470MHz
Gain: 5.0 dBi
S.W.R. < 1.5;
Input Impedance: 50ohm
Antenna Length : 145mm
Cable Type : RG174
Connector Type : SMA plug straight
Cable Length : 1.5M
868M Sucker Antenna:
 
Applicable Frequency : 868MHz/915MHz
Gain: 5.0 dBi
S.W.R. < 1.5;
Input Impedance: 50ohm
Antenna Length : 110mm
Cable Type : RG174
Connector Type : SMA plug straight
Cable Length : 1M
 
 
 
 
 
 
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