EWM220M-400T22S and EWM220M-900T22S are the new generation of LoRa wireless serial port modules (UART). They feature multiple transmission modes, operating in the 410.125-493.125MHz frequency band (default 433.125MHz) and 850.125-930.125MHz frequency band (default 873.125MHz). With LoRa spread spectrum technology, TTL level output, and compatibility with 3.3V and 5V IO port voltages, they have significant advantages such as low power consumption, high speed, long distance, small size, and high cost performance.



The LoRa modules support air wake-up, i.e., ultra-low power consumption function, suitable for battery-powered application solutions. They support RSSI signal strength indication function for evaluating signal quality, improving communication networks, and ranging. They have functions like fixed-point transmission, broadcast transmission, channel monitoring, and communication keys; parameters are saved when power is off, and the modules will work according to the set parameters after re-powering on. Equipped with efficient watchdog protection, professional RF shielding cover, support for Subcontract length setting, and can provide customized development services. The EWM220M series LoRa modules can be widely used in smart buildings, smart agriculture, wireless control, smart oil fields and other fields.


Features of EWM220M Series LoRa Modules

  • Significant advantages of low power consumption, high speed, long distance, small size, and high cost performance;

  • In ideal conditions, the communication distance can reach 5km;

  • Maximum transmit power 22dBm, software multi-level adjustable;

  • Support users to set their own communication keys, which cannot be read, greatly improving the confidentiality of user data;

  • Support RSSI signal strength indication function for evaluating signal quality, improving communication networks, and ranging;

  • Support air wake-up, i.e., ultra-low power consumption function, suitable for battery-powered application solutions;

  • Support fixed-point transmission, broadcast transmission, and channel monitoring;

  • Parameters are saved when power is off, and the modules will work according to the set parameters after re-powering on;

  • Efficient watchdog design, once an abnormality occurs, the module will automatically restart and continue to work according to the previous parameter settings;

  • Support data transmission rates from 2.4k to 62.5kbps;

  • Support 2.7-5.5V power supply, and power supply greater than 3.3V can ensure optimal performance;

  • Industrial-grade standard design, supporting long-term use at -40～+85℃;
    Dual antenna options (IPEX/stamp hole), facilitating secondary development by users and beneficial for integration.

Application Scenarios

  • Home security alarm and remote keyless entry;

  • Smart home and industrial sensors, etc.;

  • Wireless alarm security systems;

  • Building automation solutions;

  • Wireless industrial-grade remote controls;

  • Healthcare products;

  • Advanced Metering Infrastructure (AMI);

  • Automotive industry applications.