Bulletin 855W Wall Mount Signal Lights are designed to communicate the status of different conditions in the machine or critical equipment in a compact size housing. Our signal lights are available in configurations from two to five light indicators and you have the option to add the sound in the same unit. These devices provide the versatilty to meet your application requirements without any mounting orientation restriction. We offer two color enclosures which allow you to choose the one that best fits the aesthetics of your machine or equipment.