0.66 Inch OLED Display Shield for D1 Mini (HW-699) Finger Print Sensor It's a 225mAh 3v Lithium

It's a 225mAh 3v Lithium coin cell battery

This XL6009 has two input pins for VCC and GND on the left side of the module

Long Press the front two buttons in the same time for 3 seconds

075A Dimension(LxWxH) (mm) 31x27x19 (mm) Colour Black

Brown for these 1M8 resistors

0.66 Inch OLED Display Shield for D1 Mini (HW-699) Finger Print Sensor It's a 225mAh 3v LithiumThis is an HW 699 OLED Display Module for the D1 Mini Development Board. This display module is a 0. 66 inch mini display with high visibility in any light condition, dark or bright, and can be powered by a 3. 3V DC. This display shield has an onboard reset circuitry and can communicate via the serial I2C interface, which requires only two data pins to connect to the module. Features Fast response: This product is an OLED display with a faster