[Chip Solution]：LoRa

[Operating Frequency]：410.125-493.125 MHz

[Transmit Power]：22 dBm

[Communication diatance]： 5 km

[Size]：14 x 20 mm

[Product weight]：1.95 ± 0.05 g

[Introduction]：The EWM22M-400T22S is an ultra-small, low-cost wireless serial port module (UART) with multiple transmission modes. It utilizes LoRa communication technology, which is fully compatible with the E22. It has a maximum transmit power of 22dBm and operates in the 400 frequency band. It utilizes LoRa spread spectrum technology, TTL level output, and is compatible with 3.3V IO port voltage. This LoRa module offers faster speeds, lower power consumption, and a smaller size. Custom development services are also available.