KYL-300I retail 1W 2km 433MHz rs232 rf radio modems rs485/rs232 for wireless remote control modem

KYL-300I 2km-3km 433mhz rf transceiver rs485 rf radio modem db9 connector to PC, FSK Modulation, Converter RS485 to Wireless

KYL-300H 5W 10km rs485/ttl rs232 rf radio modem 433MHz/450mhz/470MHz wireless remote cotroller modem for data transmission

KYL-300P 10w rs485 radio modem rs232 rf radio modems wireless module long range 10km radio data communication