Lee Electrical, BC200C, Chrome, Wired Classic One Gang Family Unlighted Black Push Buttons For Bells, specially designed for all chimes, bells, buzzers up to 24 Volts. This push button is easy to install, only a screw driver is required, attach one wire to the screw terminal on the back of the button, and then mount in the desired location with the 2 screws that are provided. Push buttons are usually mounted near the door controls 35"-44" above the doorsill. Package includes 1 one-family unlighted push button, and 2 mounting screws.