The InStyle TRIAC dimming module is a single channel receiver that will control both 12v and 24v. Your TRIAC dimmer is wired in between the transformer and the LED tape, and a signal cable is then taken from the receiver to the TRIAC head unit. Our TRIAC dimmer draws an input voltage of 100-240v AC. Output voltage 12v or 24v. This item is RoHS compliant and conforms to all UK safety standards