10-level dimming to meet the light requirements of plants and pets. Turning lights on and off gradually reduces impact on fish. Time switch combines timer and dimmer functions. 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: - This aquarium lamp timer is not suitable for saltwater aquariums. - Do not use with AC (alternating current) power sources. - Do not exceed the specified voltage and power range during use. - Input voltage: 12V - 24V - Output voltage: 12V - 24V - Power: 50W - 100W Instructions: - To set current time: Press R key and on/off key simultaneously for 2 seconds, then use +/- keys to adjust. - Do not exceed the voltage and power range during use. Safety Instructions: - The timer is not waterproof; keep away from water and damp locations. - Ensure working voltage matches the timer’s specifications. - Do not touch with wet hands. - Turn off power before maintenance. - If malfunction occurs, have it repaired by a professional. - If product falls into water, turn off power immediately and dry in a cool place. - Avoid direct sunlight exposure. - This product is not a toy; keep out of reach of children. - For questions, . Color: Black Material: Plastic Package Contents: 1 x LED Light Dimmer Controller Note: - Other items not included. - Lighting and display differences may cause slight color variations between image and actual item. - Measurement error allowed: +/- 1-3 cm.