The 3-in-1 non-contact switch can be used as a so-called door switch (as long as it sees an obstacle, the light is off) and responsive to movement, such as a wave of the hand. In two-speed mode, it can also act as a dimmer. The viewing range of the sensor is about 5-6 cm. The switch can be powered by 12V or 24V. The maximum load of the switch when powered by 12V is 24W, while with 24V it can handle up to 48W. The product is sold without a power supply.