An apparatus includes an insulated body, a conductive contact disposed in the insulated body, and a button disposed on the insulated body. The insulated body can receive a wire through an opening in the insulated body. The conductive contact contacts the wire and secures the wire through a compression force exerted on the wire. The button has a neutral position and a depressed position, and the button in the depressed position is configured to reduce the compression force exerted on the wire.