Model N/A Quantity 1 Color Yellow + Black Material Glass fibre + ABS Features Wireless sensor; Automated Meter Reading (AMR); Industrial Automation; The control of traffic signal; Wireless handheld terminal; Remote control and monitoring; The control of robot etc. Application Automated Meter Reading (AMR); Wireless sensor; Industrial Automation; The control of traffic signal; Wireless handheld terminal; Remote control and monitoring; The control of robot etc. Other Working voltage: 3.3~5V; Transmission distance: 800~1000 meters; Speed: 1200/2400/4800/9600/19200/38400/57600bps; Working frequency: 431~478Mhz (1KHz step); UART/TTL; GFSK modulation; Large data buffer: 512bytes suitable for massive data transfer Packing List 2 x Wireless RF modules 2 x Antennas 1 x USB converter module