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Product Name: 4 PCS RS485 Master-slave Network Transceiver Wireless Repeater FSK 433MHz Uhf FR Module Board for Arduino UNO MCU STM32
Working voltage: DC 5V;
Working current: 6-40MA
Interface : RS485
Frequency: 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.
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
* Delivery Time.
We need 1-2 days to process your order before shipping.There are two shipping methoed. Fast Delivery: The delivery time for US, European countries the delivery will take 3-5 days.Slow Delivery: The delivery time for US, European countries the delivery will take 10-15 days.
* Tracking information.
After we ship package, customer receive automatic email with tracking details.
* Lost Package Policy.
If a package did not arrive in 4 weeks after the shipping date, then this package is treated as Lost. In this case a new package will be shipped to the customer provided we are able to give the same items as those purchased by the customer. If we are not able to provide the same items to substitute the lost ones we will either propose to the customer similar items or refund their cost as it will be mutually agree with the customer. If one or more items neither the same nor similar are available to be shipped, the customer can request to cancel the order entirely, thus the total cost of the order including shipping and handling cost will be fully refunded.
