①. 10-level dimming to meet the light requirements of various plants and pets. At the same time, turning on and off the lights 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. ④. Adaptation Voltage: 12-24V ⑤. 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 ⑥. Note: ⑦. 1. The aquarium lamp timer cannot use for sea aquarium ⑧. 2. It cannot in AC(Alternating current), do not use it on lamp ⑨. 3. Do not exceed the voltage and power during use ⑩. Input voltage: 12v - 24v ⑪. Output voltage: 12v - 24v ⑫. Power: 50w -100w ⑬. 1. Star time and end time go ok, i cannot set the current time? R key and on/off key at the same time for 2 second, then +/- to set the current time ⑭. 2. Do not exceed the voltage and power range during use. ⑮. Note: ⑯. 1.The timer is not waterproof, please keep away from the water and the damp position. ⑰. 2. The working voltage must be compatible with the voltage specified by the timer. ⑱. 3. It is strictly forbidden to touch the timer with wet hands. ⑲. 4. Please turn off the power before maintaining the timer ⑳. 5. When the product is not in normal use, it should be repaired by a professional. ㉑. 6. If the product accidentally falls into the water, please turn off the power immediately and dry it in a cool place. ㉒. 7. Do not expose this product to exposure to the sun. ㉓. 8. this product is not a toy, please from children. ㉔. 9. if you have any question, please contactus ㉕. Color: Black ㉖. Material: plastic ㉗. Package Contents: ㉘. 1 * LED Light Dimmer Controller ㉙. Only the above package content, other products are not included. ㉚. 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.