XIITIA 5pcs HC-12 433Mhz SI4463/SI4438 Wireless Serial Port Module 1000M Replace Bluetooth with Antenna

["★Module Size: 27.8mm*14.4mm*4mm; Power Supply Voltage: 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).","★Default Idle Current: 16 mA (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 Communication Distance(open field test): about 600m (the communication distance can be adjusted up to 1000m, the air baud rate is 5000bps).","★Default Factory Setting: working mode FU3, baud rate 9600bps, communication channel CH001 (433.4M)."]