The LoRa Radio v2.0 based on the ATmega328P and Ra-02 433Mhz radio module. The main chip ATmega328P clocked at 8 MHz and at 3.3V , which use the pro mini 8Mhz 3.3V bootloader, usage same as the pro mini. This chip has 32K of flash and 2K of RAM.On board with a 3.7V 14500 battery holder, so it can use anywhere you like. In this LoRa Radio , we out 2 IIC ports, 2 analog port (A0 A1) and 2 digital port (D3 D4) with 4 pin and 3 pin 2510-I type header.Power supply: 3.7V 14500 battery Or 3.7-12V DC power(VCC GND: 2PIN 2510-I Type connect)Size: 40mm x 60mmATmega328P @ 8MHz with 3.3V /power3.3V regulator with 500mA current outputHardware Serial, hardware I2C, hardware SPI support1 x PWM pins: D312 x analog inputs: A0 A1Pin 13 BLUE LED for blinking2 mounting holesReset buttonThese radios are not good for transmitting audio or video, they do work quite for small data packet transmission when you need more range than 2.4 GHz (BT, , WiFi, ZigBee).SX1278 LoRa based module with SPI interfacePacket radio with -to-go for librariesMax transmit power:181dBmWorking current: TX-93mA -12.15mA Standy-1.6mAIPEX connectorColour:As shownMaterial:PCBPackage Contents:2 x ModuleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.