RS485 WirelessTransceiver 433M-458M VHF/UHF Radio Modem Transmitter and Receive
2PCS RS485 5V Wireless Transceiver 20DBM 433M-458M VHF/UHF Transmitter Receiver. 1 PCS 433M-458M VHF/UHF Radio Modem RS485 Transceiver (with shell). Interface: RS485(5V GND A+ B-). The way they work, as well as wired RS485 bus.