Triggers manuals resettable membrane. Actuation by pressure in the center of the membrane with frank visualization of the trigger position. Reset with special key provided with the product. projecting or flush mounting. IP 40 IK 07. Class II. Dimensions: 90 x 90 x 57 mm projecting attachment and 90 x 90 x 27 mm in flush mount (using 67 mm dencastrement standard boxes).