Input voltage:DC3.25-15V Output voltage:DC1.25V-13 (maximum voltage difference 2V) Output current:5-1500MA Installation aperture:M3 x 4 Environmental temperature:-10C85C Storage environment:-65 ℃ 150 ° C Input terminal:XH-2.54-2P Output terminal:XH2.54-2PKF2510-3P Chip:overheat, overcurrent, short circuit protection Colour:As Shown Material:ABS Size:33.5x30.5x24mm (excluding protruding knob) Package Contents: 5 * LM317 speed controller module 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.