Foscam Universal Extension Cable Compatible with Power Adaper for Home Security Camera CCTV IP Camera (5V 10FT, Black) DC 5V Power Adapter Extension Cable For CCTV Security IP Cameras Size: 3.5mm(outer dia.)*1.35mm (inner dia.) Length: approx 10ft(3M) Hassle free for RMA by a Full USA Warranty. Support service available by support@foscam.com and 1-844-344-1113. Compatible with Foscam Security system R4, R2, FI9831P, FI9831W, FI9826P, FI9821P, FI9821EP, FI9821W, FI9816P, FI9818W, Fosbaby P1, FI8910W, FI8910E, FI8918W, FI8918E, FI8904W, FI8905W/E, FI8906W, FI8909W, FN3004H etc. indoor IP cameras and NVR.