[DETAIL] The keyestudio ESP32-IO shield is designed to be compatible with the keyestudio ESP32 Core board. The ESP32-IO shield has brought out all the pins of keyestudio ESP32 Core board in the form of 2.54mm pin header. In order to connect other sensors easily, the ESP32-IO shield also has 2 rows of 2.54mm pin headers, powering external sensors/modules with DC 3.3V voltage. At the same time, in order to supply the power to keyestudio ESP32 Core board, the ESP32-IO shield has also designed with the power supply circuit. When using, you only need to input DC6-9V voltage on the black DC jack to power the keyestudio ESP32 Core board. And the ESP32-IO shield also comes with a DIP switch, for controlling the power. Performance Parameters Supply voltage: DC 6--9V Working current: 60mA Maximum power: 0.3W Operating temperature: -25℃ to +65℃ Dimensions: 30mm*20mm Environmental attributes: ROHS ESP32-WROOM-32 Core Board Note:ThisESP32-IO Shieldis only compatible with 8266 modules with a pin spacing of 22.86mm. shown below: [ATTRIBUTES] - Hign-concerned Chemical: None - Package: SMD - is_customized: Yes - Hign-concerned Chemical: None - Package: SMD - is_customized: Yes - Model Number: ESP32 - Dissipation Power: 0.3W - Supply Voltage: DC 6-9V - Application: Computer - Type: Voltage Regulator - Brand Name: keyestudio - Origin: Mainland China - Condition: New - Operating Temperature: -25℃ to +65℃ - Product number: KS0465/KS0413