Features 1. Industrial grade LED display digital tube that can be easily detected at any angle and light. 2. 100-level dimming to meet the requirements of various plants and pets for light. At the same time, both open and close use the gradient mode to reduce the effect on fish. 3. With 8 sets of time brightness settings, timer switch, simulate the different brightness switch of nature. Combine the timer and the dimmer into one. Four gear timing. With output100W, and input 110-220V, 50/60HZ. 4. 0.05UM patch, mature sunrise and sunsets procedures, all tested. 5. Easy installation. Before the installation, confirm the power supply and power of the lamp, which is lower than 36V&100W. Check the interface of the lamp (5.5mm DC master locks), and connect the modulator in series between the lamp and the power supply. Then connect the dimmer to the LED lamp. Plug in the power to automatically turn on the dimmer. At last set the dimmer parameter. Specifications: Material: Plastic Color: Black Size: Approx.8.2x4.3x2.5cm/3.23x1.69x0.98in Plug: US/EU Weight: Approx.65g Product Connector: 5.5mm/0.22in DC Male with Lock Thread Applicable to: Compatible with Conventional 36V Under 100w with Constant Pressure LED Lamps Four Gear Timing: Output: 100W Input: 110-220V 50/60HZ Key Functions: ON/OFF: Switch the light on/off. Long press enter time to adjust the interface, by pressing + and - adjusting hours and minutes. Press "M" to exit time setting. MIN/L+: Brightness increased HOUR/L-: Brightness decrease MODE: Press the manual/automatic switch, long press into the timer setting. NO-1 and time cycle flicker, through + and - for the first set of time Settings. Press MODE key again, L000 flicker, through + and - for the first set of brightness Settings. Then press MODE key, NO-2 and time cycle flicker, through + and - to set the second set of time. Press MODE key again, L000 flicker, through + and - to set the second set of brightness Settings. In this way, 8 sets of data are set. Press MODE to exit after setting. P.S. If the time is set to "-- : --", the data on behalf of the group does not work. Display: L00*/ time back and forth indicates that the system is in manual state. ATUO/ time shows that the system is in an automatic state, and the system automatically enters the automatic state by default. In automatic state, you can intervene manually. (for example, turn off the light in the automatic state when the light is turned off, and keep on going until the next automatic cycle arrives). Package Includes:1 Piece LED Dimmer Controller Note: 1. This dimmer can only be used by Chihiro, Aishang, and cool fish lights. Other lights can't be used 2. Only applicable to LED lamps within 36V and 100W. 3. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 4. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you