Watertight enclosure for emergency systems, equipped with illuminated push-button and 2 contacts 1NO 1NC that can be expanded up to 4 contacts. The enclosure has the pre-arrangement for use of green led to indicate the good condition of emergency circuit. It is pre-arranged with a short or long push-button for deliberate operation, or with an intrinsic safety function. Thanks to the emergency hammer, available as an accessory, sealable mask, and halogen free materials are ideally suited for applications in areas open to public.