ATC-873 RS-232 / RS-485 Mini Wireless Converter for 1000 meter

Interface : Rs-232/RS485/RS422
Transmission Power : <500 Mw 
Carrier Frequency : 433 MHz
Interface Speed Rate : 1.2 ~ 38.4 KBPS
Transmission Distance : 800 mtr
Support : Windows 98/ME/XP/2000/CE, MAC & Linux
Signal Indication : TXD, RXD, PWR
Supply : 9˜12 VDC
Working Environment : -20°C˜65°C, 10%˜90%RH