Operation Method: 1. Connect your router, optical modem, or other DC-powered device to this product, then connect your device’s power adapter cable. 2. The timer begins counting upon power-on. Default cycle is 24 hours, fully automatic. For example, to automatically restart at 00:00 daily, configure the unit to power off and on at midnight. It cycles power every 24 hours. Compatible with DC 5V, 9V, 12V, and 24V devices, including network routers, fiber modems, and optical network terminals (ONTs). Connector Type: DC 5.5 mm female and male Voltage Support: DC 5V–24V Color: Black Material: Plastic Package Includes: 4 x Router Auto-Restart Cables Note: Other accessories shown in images are not included. Color may vary slightly due to screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.