Product Descriptions

EWM22M-xxT22S is an ultra small and low-cost wireless serial port module (UART) with multiple transmission modes. It adopts LORA communication technology that is fully compatible and interoperable with E22, with a maximum transmission power of 22dBm, and operates in the 400 or 900 frequency bands. Adopting LoRa spread spectrum technology, TTL level output, compatible with 3.3V IO port voltage.

EWM22M-xxT22S has faster speed, lower power consumption, and smaller size; Support functions such as air wake-up, wireless configuration, channel monitoring, automatic relay networking, communication keys, etc., support packet length setting, and provide customized development services. The three modules in the following figure have the same power but different frequency bands.

Product Features

• Adopting the new generation LoRa spread spectrum modulation technology, it brings longer communication distance and stronger anti-interference ability;

• Support serial port firmware upgrade, making firmware updates more convenient;

• Supports AT commands, making it more convenient to use;

• Support automatic relay networking, multi-level relay is suitable for ultra long distance communication, and multiple networks run simultaneously in the same area;

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

• Support LBT function, listen to channel environment noise before sending, which can greatly improve the communication success rate of the module in harsh environments;

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

• Support wireless parameter configuration, remotely configure or read wireless module parameters by sending command packets wirelessly;

• Support air wake-up, which is an ultra-low power consumption function, suitable for battery powered application solutions;

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

• Supports deep sleep mode, with a power consumption of approximately 3uA for the entire machine;

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

• Save parameters after power failure, and the module will work according to the set parameters after power on again;

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

• EWM22M-400T22S and EWM22M-900T22S support data transmission rates ranging from 2.4K to 62.5Kbps;

• Supports 2.7-5.5V power supply, with optimal performance guaranteed for power supplies above 3.3V;

• Industrial standard design, supporting long-term use at -40~+85 ℃;

• The maximum module power can reach 160mW (22dBm), with longer and more stable transmission.

Product Applications

• Home security alarm and remote keyless entry;

• Smart home and industrial sensors, etc;

• Wireless alarm security system;

• Building automation solutions;

• Wireless industrial grade remote control;

• Healthcare products;

• Advanced Meter Reading Architecture (AMI).

Specifications

Actual product photos

Payment&Transportation

Official Certificate&Certificate

Multiple product supply

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Standard packaging

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