S FIRE SF-1021 Magnetic Alarm Contact Press Fit and Recessed

S-FIRE is part of an alliance of the world's leading equipment for intrusion manufacturers. Only one of its kind that meets UL and CE standards. 

• Contact NC.
• For embedding wood or metal doors.
• Dimensions: 19mm(inner diameter),  11.41" (29 mm) (outer diameter), 9.44" (24 mm) (long).
• 11.81" (30 cm) of white cable.
• Recommended drill 3/4".