RF data module with transmission distance up to 500 meters,Carrier frequency ... , awaken from COM port, awaken from air6) Main APP: wireless meter-reading, order dishes system, queue system, corporeitytest equipment, ... of false data produced in the air, and able to transmit longdata frames, Good reliability for long-time use, low ... ) Dimensions: 44 x 27 x 8mm (antenna not included) Wireless RF module