KYL-300I 433mhz radio sender data radio distance 2km-3km ttl rs485 rs232 wireless 500mw 1w plc modem db9 connector

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KYL-300I 2km-3km 433MHz wireless radio modems DB9 connector to PC&wireless LED sender

KYL-300I 2km 433MHz wireless data module DB9 Connector RS232 radio modem RS485. TTL, USB Interface Selectable

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

PCI-E 1 Port Serials Card, Moschip Chipset, RS232/DB9 Connector

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433MHz Wireless Transmitter 2km-3km DB9 Connector to PC