Description: WiFi TC421 programmable time controller to make the load output change over time, the customer may customize schedule mode they want through the upper PC or APP client. Through the USB port or wifi to download required schedule to the controller. This controller can control load of led changing effect no more than five channels. It also can be setup time for the controller because of synchronous clock function of upper host. Perfect for plant lights, light box advertising, the stage, home decoration, etc. Specification: Material:Plastic Color:Black Size:Approx.Approx.15x7.8x2.5cm / 5.91x3.07x0.98inch Operating Temperature:-20-60 Voltage:DC12-24V Static Power:< 0.5W Maximum Output Current:20A Output: 5 channel Package Includes: 2 piece Controller 2 piece USB Cable 2 piece CD Note: Since the size above is measured by hand, the size of the actual item could be slightly different from the size above. Due to the lighting effects, monitor settings,etc.There could be some slight difference in the color of the pictures and the actual item.