LORaE220-433 Unit is a LoRa communication unit for the 433MHz frequency band launched by M5Stack, using LLCC68 chip solution. Compared with the traditional SX1278 solution, LLCC68 has the advantages of longer transmission distance, faster speed and lower power consumption. The unit supports air wake-up, carrier monitoring and communication key functions, and realizes point-to-point transmission mode and broadcast mode through convenient serial communication. The module can switch four different working modes through the onboard dip switch. Users can send and receive data without complex configuration to meet various communication needs. Suitable for application scenarios such as home security alarm, building automation, smart home and automotive industry. Adopt LLCC68 chip solution Maximum transmission power 22dBm, multi-level software can support users to set communication keys by themselves Support air wake-up Support fixed-point transmission, broadcast transmission, channel monitoring Communication band: Support 433MHz band (410.125-493.125MHz) Onboard dip switch to adjust communication mode Serial communication Colour:Grey Material:plastic Package Contents: 1 x LoRaE220-433 Unit 1 x Rubber antenna Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.