The DP9900 PoE module is the smallest POE solution in the industry. DP9900 can operate in a wide input voltage range and provides Stable output. DP9900 also has built-in short-circuit output protection Input voltage range 36V to 57V Minimum external components required Short circuit protection Overheat protection Adjustable output Colour:black Material: PCB Size:14 x 21 x 13mm Package Contents: 1x POE module Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.