TC421 the customer may customize schedule mode they want through the upper PC or APP Client. You can set the mode effect for a certain period of time, can edit multiple mode and delete redundant mode, can be directly preview mode Model Number : TC421 Working temperature: -20-60C Supply voltage: DC12-24V Static power consumption: Less than 0.5W Output: 5 channels Maximum output current: 20A Colour:As Shown Material:plastic Package Contents: 1 X LED time controller 1 X USB cable Only the above package content, other products are not included. 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.