Aquarium Light Controller 4 Modes Sunrise Sunset Aquarium Dimmer LED Light For Fish Tank Lamp Timer Adjust Brightness Modulator Feature: 1.10-level dimming to meet the light requirements of various plants and pets.At the same time, turning on and off the lights using the gradient mode can reduce the impact on the fish.2. Time switch, which combines timer and dimmer into one.3. Suitable for most fish tank lights with input and output of 12-24 V. Specification: 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 Package Includes: 1x Aquarium Light Controller Frequently Asked Question 1. Star time and end time go ok, i cannot set the current time Press R key and on/off key at the same time for 2 second, then press +/- to set the current time 2. Do not exceed the voltage and power range during use. Model Input Voltage Output Voltage Power T1 timer 12V 12V 50W 24V 24V 100W Note: 1.The timer is not waterproof, please keep away from the water and the damp position. 2. The working voltage must be compatible with the voltage specified by the timer. 3. It is strictly forbidden to touch the timer with wet hands. 4. Please turn off the power before maintaining the timer 5. When the product is not in normal use, it should be repaired by a professional. 6. If the product accidentally falls into the water, please turn off the power immediately and dry it in a cool place. 7. Do not expose this product to exposure to the sun. 8. this product is not a toy, please stay away from children. 9. if you have any question, please contactus