DAHUA-1946 ASF908 DAHUA CONTACTLESS EXIT PUSH BUTTONDahua contactless exit push button. Made of stainless steel. NO / NC functions. Durability of 500,000 uses.DAHUA CONTACTLESS EXIT PUSH BUTTONDahua contactless exit push button. Made of stainless steel. NO / NC functions. Durability of 500,000 uses.View price