... to various use protocol Features:1) RS-485 Mini power wireless RF module(500M)2) Nakedness and small size, suit for ... hardware, awaken from COM port, awaken from air6) Main APP: wireless meter-reading, order dishes system, queue system, corporeitytest equipment, electrical ... ) Effective speed: 1,200 / 2,400 / 4,800 / 9,600 / 19,200 / 38,400bpse) Interface: TTL level UART,RS-485f) Interface ...