This is an additional speaker for the Seco-Larm Door Entry Alert System (HC-SEE931S22RRC). This system alerts you when someone is entering any door. The Chime is perfect for garage doors, overhead doors, or entry detection for store fronts. Other applications: offices, schools, warehouse, vehicle detection (driveway alert), etc. It has 2 different modes of sound alert. It will make a "ding-dong" sound or a siren sound when someone is entering the doorway and the beam is interrupted. No hard wiring required. Has a range of about 22 ft.
You can select the output of this additional speaker / electronic chime for: