[Chip solution]：LoRa solution

[Frequency]：868/915MHz

[Transmitting power]：20dBm

[Communication distance]：5km

[Size]：14*20mm

[Product weight]： 2.0±0.1g

[Introduction]：EWM32M-900T20S series is an ultra-small, low-cost wireless serial port module (UART). It uses LORA communication technology that is fully compatible with E32. Its transmission power is 20dBm, it has multiple transmission modes, works in the 868/915MHz frequency band, has TTL level output, and is compatible with 3.3V IO port voltage. The wireless module has the advantages of longer communication distance, strong anti-interference ability, and strong confidentiality.