E22-230T37S 230MHz LoRa RF Module 37dbm 25km Long Range — Low Power, LBT, RSSI, Watchdog, SMD IPEX Stamp Hole

High-power 230MHz LoRa RF module E22-230T37S delivering up to 5W (37dBm) for stable long-distance links (up to 25km). Designed for battery-powered and industrial use, it combines long range with low power options and flexible networking modes. Typical applications: home security alarms and remote keyless entry, smart home and industrial sensors, wireless alarm/security systems, building automation, industrial-grade remote controls, healthcare devices, Advanced Meter Reading (AMI), and automotive telemetry. Radio and networking features: supports data transmission rate from 0.3K to 62.5kbps; supports auto-relay networking with multi-level relay for ultra-long distance communication and the ability for multiple networks to run simultaneously in the same area; supports fixed-point transmission, broadcast transmission, and channel monitoring; LBT function listens to channel noise before sending to improve success rate in noisy environments; RSSI signal strength indication for link quality assessment. Power management and protection: supports over-the-air wake-up for ultra-low power battery operation and deep hibernation across the full power supply range with the whole-module current less than 10uA; module power up to 5W (37dBm) for farther, more reliable transmission; built-in over-temperature protection that stops transmission if the module exceeds its maximum temperature; efficient watchdog that automatically restarts the module on fault and resumes previous parameter settings. Security and reliability: supports user-set communication key that cannot be read to enhance data confidentiality; parameters are saved at power-down so the module resumes with saved settings on power-up; built-in under-voltage and overvoltage warning functions plus a built-in warning LED. Hardware and environmental specs: industrial-standard design for long-term use at -40 ~ +85 ℃; SMD package with IPEX connector and stamp-hole option; bottom reserved matrix pads for easy secondary development and heat dissipation treatment. Regional bands: supports global license-free ISM 433MHz band and 230/470MHz meter reading band.