Technical Parameters
MCU:ESP32( 240MHz Tensilica LX6 dual-core + 1 ULP, 600 DMIPS, 520KB SRAM, Wi-Fi, dual mode Bluetooth)
LoRa chip:SX1276 (868 and 915 version); SX1278 (433 and 470 version)
LoRa bands:EU_433, CN_470_510, EU_863_870, US_902_928 four bands optional
LoRa maximum output power:18dB 2dB
Hardware resources:UART x 3; SPI x 2; I2C x 2; I2S x 1
12 - bits ADC; 8 - bits DAC
29 general GPIO
Display:0.96 inch 128*64 OLED display
FLASH:8MB(64M-bits) SPI FLASH
interface:Micro USB x 1; LoRa antenna interface(IPEX) x 1
Size:50.2 x 25.5 x 9.74 mm
USB to UART BridgeCP2102
Battery Type:3.7V Lithium?SH1.25 x 2?
Battery detection circuit:yes
External device power control?Vext?:yes
Low power designDeep Sleep: 800uA