The controller is adopted 8 digital tube to show the modes of time and work. It adopts PWM dimmer electric.It matches the precise clock clip which can control the brightness and darkness of the light according to the time .When present time is same as the predicted time , the light will change as previous brightness. You can set 10 scenes during the 24 hours one day. By optional sensor, the controller can automatically adjust the brightness to the light according to the brightness and darkness of the environment optical line.The controller can be used for the normal one.The controller works through the infrared remote controller, and operate easily. Specification: Input voltage:DC12-24V. Output:3 circuit. Output current:4A/ch. Static consumption:10M. Time deviation:<5 seconds per month. Controller size: L122xW71×H25mm. DC connector size:5.5*2.1mm. Feature: When the controller is on, press the brightness hot key on the controller to enter the light adjust mode. When the first number to the digital tube is 0 that is the controller can change the light according to settle the brightness. With power off memory function. When re-connect to the power supply, it will be the statue that you set before cutting the power supply automatically. Note: 1,This products input voltage is DC12V-24V,other input voltage are not allowed. 2,Lead wire should be connected correctly, according to the wire color and the connecting diagram offers. 3,Overload are prohibited. Package included: 1*time controller. 1*24keys remote control. 1*cable line