This easy-to-use push button allows a user to perform a calm, effective and confident action when needed. The multipurpose pneumatic Stopper Station push button covers a wide range of applications. Pneumatic button opens or closes a circuit and has a timed delay before reset and does not require electricity to operate. Protective cover helps shield button from damage and accidental activation. Button offered in six colors, several button activation choices, with or without a protective cover and in any language to accommodate most applications. ADA Compliant, UL recognized component UL508.