Data Sheet: Power supply: 5V DC RF power: 50mW Baud rate: 1,200/2,400/4,800/9,600/19,200bps Interface: TTL Receive current: <20mA (TTL connect) Transmitting current: <40mA Sleep current: 30uA Distance: 600m (BER = 10-5 at 9,600bps) 1000m (BER = 10-5 at 1,200bps) Size: 28 x 15 x 10mm (without antenna port)