Electric Door Exit Release Stainless Steel Push Button Switch ABK-801B Product Name : Push Button Switch;Model : ABK-801B;Use for : Electric Door Action Type : 1NO 1NC;Contact Type : Momentary Plate Size : 8.8 x 8.8cm/ 3.4" x 3.4"(L*W);Mounted Hole Dia. : 4mm/ 0.16" Material : Stainless Steel;Color : Silver Tone Weight : 110g;Standard Structure : 1 x Electric Door Push Button Switch