Junyo Thief Prevention Burglar Intruder Deterrent Home Security TV Led Light Device Built-in Light Sensor and Timer :The light sensor automatically triggers the Fake TV at dusk. And scheduled standby automatically with the light timer,you can set a time during the hours you want this on, so it is more convenient and you needn't worry to forget when you go out. 3 Modes Setting:Settings include a dusk+4 hours, a dusk+8 hours and an "always on" setting.4 hours and 8 hours means it will work continuously 4 or 8 hours then standby automatically. Realistic TV Program Simulation: Completely unpredictable, no light or color pattern repeats.Simulates scene changes, light fades, light flickering, on-screen motion & color changes Visual Deterrent to Intruders/Burglars: It maintains a somewhat constant glow with some intermittent flashes , from outside it gives the appearance that someone is at home watching TV. Eco-Friendly and Low Power Consumption:The led light power is only 3W ,consumes just the power of a night-light, but the built in computer controls its super bright multi-color LED light output equivalent to a typical 27" TV.