The 5820A Series Recessed ShatterPro II is designed for use when sensor appearance is a consideration. The 5820A recessed model can be mounted directly into the wall or ceiling or can be used with the single gang box accessory. A trim ring is included.

Using patented Pattern Recognition Technology, the sensor listens for the actual pattern of breaking glass while eliminating most false alarm patterns. Recessed ShatterPro II sensors listen across the glass break frequency spectrum to differentiate the sound of breaking glass from most normal room sounds. A new test feature takes installation faster by eliminating the test mode jumper. The Recessed ShatterPro II is tested by activating the hand-held glassbreak tester at close range. Opening the sensor is unnecessary. 

When aesthetic considerations are critical, choose the 5820A Series Recessed ShatterPro II. This recessed model can be mounted directly into the wall or ceiling, with a one-inch diameter hole. The 5820A Series offers the same full features as the surface mount ShatterPro II. (Trim ring included)

Specifications
Housing material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Flame retardant ABS plastic
Microphone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Omni-directional 360° electret
Sensitivity setting.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Factory set
Glass types detected
Plate glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Up to 1/4" (6.4 mm)
Tempered glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Up to 1/4" (6.4 mm)
Wired glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Up to 1/4" (6.4 mm)
Laminated glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Up to 1/4" (6.4 mm)
Minimum glass size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1' x 2'
Mounting location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..Ceiling or wall
Color . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .White