Operation :1.Connect your router/optical modem/other product to this product, and then connect your device power adapter cable.2.The time to start counting when power is on, the default is 24 hours, fully automatic cycle For example, if you need it to automatically restart at 00:00 every night, then turn it off and on again at 00:00. It will power off/on every 24 hours. In , it supports all DC5V 9V 12V 24VDC devices, such as: network routers, Fiber Modem, optical cats, no restrictions on . Connector type: DC5.5 female, DC5.5 male Industrial level: Support DC5V~24V DC equipment Civil level: Support DC5V~24V DC equipment Professional level: Support DC5V~24V DC equipment Colour:Black Material:plastic Package Contents: 1 x Router restart line 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.