[Communication Security] The solar-powered LoRa node features a built-in LoRa radio for long-range off-grid communication. By adding channels and setting communication keys, information is effectively encrypted, ensuring extremely high security. [Core Processor] Built-in ESP32-SX1262 LoRa communication module for low power consumption and ultra-long standby time. [Solar Panel] The solar panel has a power output of 4W, using monocrystalline silicon with a 24% conversion rate to charge the battery. [Charge/Discharge Management] An internal solar controller precisely controls the charging and discharging of the internal battery, ensuring the solar-powered LoRa node functions properly. [Transmission Frequency] The LoRa module supports 433MHz/868MHz/915MHz frequencies. Frequency selection varies by country; please refer to the frequency selection guide. [Self-Organizing Network] The solar-powered LoRa node self-organizes after power-on. It is ready to use after adding devices and is compatible with other LoRa devices based on the for Meshtastic protocol. It allows nodes from different to join the same network, improving network scalability. Power Supply:4 x 18650 battery (Not included batteries) Color:Black Material:ABS Package Contents: 1 * ESP32-SX1262 Solar LoRa Node 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.