This Harmony ZB6EB4B is a red light block with body/fixing collar with integral LED 12V to 24V. It is part of the range Harmony XB6 diameter 16mm monolithic plastic push buttons, switches, and pilot lights
This Harmony ZB6AV4 is a red pilot light head, for integral LED. It is part of the range Harmony XB6 diameter 16mm monolithic plastic push buttons, switches, and pilot lights
This Harmony ZB6CV4 is a square red pilot light head, for integral LED. It is part of the range Harmony XB6 diameter 16mm monolithic plastic push buttons, switches, and pilot lights
This Harmony ZB6DV4 is a rectangular red pilot light head for integral LED. It is part of the range Harmony XB6 diameter 16mm monolithic plastic push buttons, switches, and pilot lights