The supply voltage is 3.2V~5.5V. (If the module is to be in the transmitting state for a long time, it is recommended to connect a 1N4007 diode in series when the power supply voltage exceeds 4.5V to avoid the built-in LDO heating of the module) | The default communication distance (open field test): about 600m (the communication distance can be adjusted up to 1000m, the air baud rate is 5000bps). | Default idle current: 16MA (module operating current is different in different operating modes). | Operating frequency range (433.4-473.0MHz, up to 100 communication channels), maximum 100mW transmit power (settable) | Default factory setting: working mode FU3, baud rate 9600bps, communication channel CH001 (433.4M).

Rating: DC 5V / 0.1-0.3A. | Size: Approx. 50 x 15mm (D*H) | Life Expectancy at 40 Celsius degree: 40000 hours. | Quiet sleeve-bearing design | Ultra quiet MID speed brushless DC Blower