1Pcs RS485 Wireless Transceiver 20DBM 433Mhz Transmitter and Receiver

1Pcs RS485 Wireless Transceiver 20DBM 433Mhz Transmitter and Receiver Description

1. Long-distance wireless transmission (up to 500 meters in open area , 10kbps baud rate in the air ).
2. Operating frequency range ( 433 - 458.5MHz , up to 255 communication channels). Maximum 100mW ( 20dBm ) transmit power ( 10 levels of power can be set ).
3. Built-in MCU, use serial port to communicate with external devices. Send 31 bytes at a time.
4. The module can support one-to-one, one-to-many transparent transmission communication through ID setting Changing the baud rate of a different serial port synchronously change the rate at which data is sent over the air. ( 10kbps-100kbps)
5. Set the ''critical three minutes''. The module can send and receive data normally within three minutes of power-on. You can send the AT '' AT+ENABLE=1 '' to make the module enter the AT state for parameter setting. There is only this reserved word in these three minutes. After more than three minutes, you not be to enter the AT mode, you can only send and receive data, '' AT+ENABLE=1'' also be sent out as data, there are no reserved words at this time.

Product Name: VHF/UHF Radio Modem RS485 Wireless Transceiver 20DBM 433mhz Transmitter and Receiver
Working voltage: 4.5V-5.5V;
Interface : RS485(5V GND A+ B-)
Frequency: 433MHz
Transmit power: -40~+20dBm;
Receiver sensitivity: -114dBm;
Operating temperature: -25 Celsius~+75 Celsius;
Transparent transmission mode baud rate :1200 2400,4800,9600(Default),19200;
Open ground Transmission distance : 500M
Size(without antenna): 74 x 24 x 16mm
Recommend to than 2pcs!!!
How to use (more than the =2pcs):
1/2PCS,Module 1 and Module 2 send data to each other.
2 more than the =3PCS,One as master device, the other as be as slave device.
the way they work as well as wired RS485 bus. Masterdevice 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:
IP PTZ Camera
Modbus modbus temperature sensor
LED Controller
R4D3C32 N4D8B08 N4D8C12 RS485 Relay
Remote control, remote measurement system;
Wireless meter ;
Smart Home,Home Automation ,Wiser Home;
Access control ;
Smart meter
Colour:blue
Material:Plastic + Metal

Package Contents:
1 * 433M-458M VHF/UHF Radio Modem RS485 transceiver(With shell)

Only the above package content, other products are not included.
Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.