Input voltage: DC 5V Output voltage: DC 3.3V (Only) note: The sensor expansion board only supports 3.3V voltage output Material: PCB colour: As shown Package Contents: 1 x expansion board V2 Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.