This Low Voltage (12/24VDC) in-wall dimmer switch fits into a standard single-gang box and allows you to dim any of aspectLED's Low Voltage 12VDC or 24VDC dimmable LED light fixtures. This dimmer is connected between your 12VDC or 24VDC power supply and your 12VDC or 24VDC LED light(s). This switch offers smooth dimming from 0-100% and an on-off toggle switch. The maximum load for this LED dimmer switch is 100 watts.