Comparison between Lora V1.3 and Lora V1.0: 1.Product low power design. 2.Optimize LORA RF circuit. 3.Add battery voltage detection Pin IO35 Hardware Specifications: Chipset:ESPRESSIF-ESP32 (Wi-Fi & Bluetooth)240MHz Xtensa single-/dual-core 32-bit LX6 microprocessor Compatible Audio & Video Equipment Style: Display Equipment Modular interface:UART,SPI,SDIO,I2C,PWM,I2S,ADC,,Cap Sensor On-board clock:40MHz crystal oscillator Name: USB to TTL:CP2104 Working voltage:About 2.7V-3.6V Module:SX1276 FLASH:QSPI flash 4MB :520 kB Button:BOOT,REST Sleep current:About 600uA Working temperature range:-40 ~ +85 Screen:OLED 0.96 Inch Power Supply: Power Supply Input:USB 5V/1A Charging current:500mA Battery Input:3.7-4.2V Charge IC JST Connector: 2 Pin 1.25mm Wi-Fi: Standard:FCC/-RED/IC/TELEC/KCC/SRRC/NCC(esp32 chip) Protocol:802.11 b/g(802.11n, to150Mbps)A-MPDU and A-MSDU polymerization,support 0.4S Protection interval Frequency range:2.4GHz~2.5GHz(2400M~2483.5M) Transmit Power:22dBm Communication distance:300m Bluetooth: Protocol:Meet bluetooth v4.2BR/ and BLE standard Radio frequency:With -97dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter Audio frequency:CVSD& audio frequency Software specification Wi-Fi Mode:Station/SoftAP/SoftAP+Station/P2P Security mechanism:WPA/WPA2/WPA2-Enterprise/WPS Encryption Type://ECC/SHA Firmware upgrade:UART download/OTA(Through network/host to download and write firmware) Note:Product does not have solder pins Dimensions (WxHxD)): 53.07mm*25.32mm*7.5mm Color: Black Material: metal + pc Package Contents: 1 * Lora V1.3(868Mhz) Module 1 * Power Cable 2 * Pin 1 * Ant Only the above package content, other products are not included. Note: Light 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.