WS8901D22 is a LoRa wireless digital transmission radio designed and produced by Chengdu Silent Smart Technology Co., Ltd. It has a long communication distance, supports industrial-grade RS485 communication interface, and has a variety of protection measures, such as anti-reverse connection protection, over-connection protection, lightning protection, antenna surge protection, etc., which strengthens the radio's adaptability to complex environments.

WS8901D22 works in the voltage range of 8V~28V, and can be configured by AT commands for its related parameters, which is convenient for customers to use in different application scenarios; LoRa direct-sequence spread spectrum technology, due to its centralized power density, will bring a longer distance while improving the anti-jamming capability