ITEM NAME:1 Piece ESP32 Rev1 WiFi DHT11 Development Board, Soil Temperature & Humidity Description: ESP32 WiFi Bluetooth DHT11 Soil Temperature and Humidity Sensor Module. Power Supply, USB 5V/1A, 18650 battery. On-board clock, 40MHz crystal oscillator. Working voltage, 2.3V-3.6V. Working current, about 130mA. Soil temperature sensing module and humidity sensor module for ESP32 Rev1 WiFi & Bluetooth battery and DHT11 development board. Specification: Material: PC Board Size: 18 x 15 x 5cm / 7.09 x 5.91 x 1.97inch Package Includes: 1 Piece ESP32 Rev1 Soil Temperature Humidity Sensor Module Note: Please allow slightly 0~1mm difference due to manual measurement. Color may be slightly different since different monitor. SKU: FUZ0024745368012204.ESP32 WiFi Bluetooth DHT11 Soil Temperature and Humidity Sensor Module. 1 Piece ESP32 Rev1 Soil Temperature Humidity Sensor Module. Material: PC Board. Color may be slightly different since different monitor.