10-level dimming to meet the light requirements of plants and pets. Turning lights on and off gradually reduces the impact on fish. Time switch combines timer and dimmer functions in one device. Suitable for most fish tank lights with input and output of 12-24V. Adaptation Voltage: 12-24V Applicable Power Range: 3-100W Adaptation Type: Single-channel lamps Product Connector: 5.5mm DC male with lock thread Functions: 1. Timing 2. Four Sunrise and Sunset Modes 3. Ten-level Brightness Adjustment Notes: 1. This aquarium lamp timer is not suitable for saltwater aquariums. 2. Do not use with AC (alternating current) power sources. 3. Do not exceed the specified voltage and power range during use. 4. The timer is not waterproof; keep it away from water and damp locations. 5. Ensure the working voltage matches the timer's specifications. 6. Do not touch the timer with wet hands. 7. Turn off the power before performing any maintenance. 8. If the product is not functioning properly, have it repaired by a professional. 9. If the product falls into water, immediately turn off the power and dry it in a cool place. 10. Avoid prolonged exposure to direct sunlight. 11. This product is not a toy; keep it out of reach of children. Input Voltage: 12V - 24V Output Voltage: 12V - 24V Power Rating: 50W - 100W Setting Current Time: Press R key and on/off key simultaneously for 2 seconds, then use +/- buttons to set current time. Color: Black Material: Plastic Package Contents: 1 x LED Light Dimmer Controller Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement error allowed is +/- 1-3cm.