Take precautions for your home or business with the Honeywell System Sensor. This device offers an extra level of security with audible and visible signals to alert occupants to evacuate the property. It is ideal for noisy areas and for individuals who are hearing-impaired. The plug-in design mounts easily to a wall or ceiling. It features a rotary switch to select the level of sound, using a horn tone or chime. You can also set the range for a strobe of light when alarming.