Modulation mode: QPSK Method of spread spectrum: DSSS Working frequency: 2.4 to 2.5GHz Transmission power: 0dBm (1mW) Receiving sensitivity: -92dBm Interface: UART, TTL, 38,400bps and 8N1 Receive current: less than 33mA Transmission distance: within the visible range, when the height of antenna is higher than 2m, reliable transmission distance is 100m Power supply: 3.3 to 6.0V DC Transmit current: less than 33mA Working temperature: -40 to 80 degrees Celsius (industrial) Dimensions: 38 x 33.4 x 3.5mm