HC-12 SI4463 Wireless Serial Module

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HC-12 SI4463 Wireless Serial Module https://bit.ly/3eQnH5M For wireless communication between two devices using a serial communication. Buy 2 models and they will work in pairs by default as a transmitter and receiver. Commonly used for communicating between two Arduinos. Advice: use a ground plane to use these properly. It's common for antenna use. Someone on Arduino forum was helpful in mentioning this. 1: Supply voltage 3.2V ~ 5.5V. (If you want to work in the module launch state for a long time, it is recommended when the supply voltage exceeds 4.5V series with a 1N4007 diode, to avoid heating module built LDO) 2: Default communication distance (open test): about 600m (adjustable to achieve the maximum communication distance of 1000m, the air baud rate 5000bps). 3: The default idle current: 16 mA (modules in different operating currents of the different operating modes). 4: Module size: 27.8mm × 14.4mm × 4mm. 5: Operating frequency range (433.4-473.0MHz, up to 100 communication channels) Maximum 100mW transmit power (can be set). 6: The module supports software upgrades. (We provide customers with software upgrades) 7: The default factory settings: operating mode FU3, baud rate 9600bps, communication channel CH001 (433.4M). https://www.aliexpress.com/item/HC-12-SI4463-wireless-microcontroller-serial-433-long-range-1000M-with-antenna-for-Bluetooth/32663674457.html?spm=2114.search0204.3.2.oOadol&ws_ab_test=searchweb0_0,searchweb201602_4_10152_10065_10151_10068_10130_10307_10137_10060_10155_10154_5370011_10056_10055_10054_10059_100031_10099_5400020_5410011_10103_10102_5430011_10052_10053_10142_10107_10050_10051_5380020_5390020_10084_10083_10080_10082_10081_10178_10110_10111_5420020_10112_10113_10114_10312_10313_10314_10315_10316_10078_10079_10073,searchweb201603_19,ppcSwitch_5_ppcChannel&btsid=c6aabdb3-3d05-43ff-b605-543fd78388c4&algo_expid=7ebf12ba-2a0d-4b4c-a4a5-f02445f5c00b-0&algo_pvid=7ebf12ba-2a0d-4b4c-a4a5-f02445f5c00b