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:PlasticColor:BlackSize:Approx.Approx.15x7.8x2.5cm / 5.91x3.07x0.98inchOperating Temperature:-20-60Voltage:DC12-24VStatic Power:Package Includes:2 piece Controller2 piece USB Cable2 piece CD:Since the size is measured by hand， the size of the actual item could be slightly different from the