Product Features Where to buy: https://s.click.aliexpress.com/e/_d6kgNUH ESP32 Lastest ESP32 Version: REV1 WIFI Bluetooth 8MB PSRAM 4MB Flash 3D Antenna LORA Product Description Working voltage: 1.8~3.7v Acceptable current:10~14mA Transmit current: 120mA@+20dBm