The Alpha Communications SF119/2A Emergency Pull Switch features a rugged, long-life, positive-acting switch mounted on a durable ABS plastic faceplate. Signaling an emergency requires just a short pull on the 6' long nylon cord, in any direction. The signal cannot be canceled except at the point of origin. It is primarily designed to be used with the AlphaStatus room status system, but can be used for other low-voltage applications as well. The SF119/2A provides two separate circuits to operate 2 separate signaling devices, such as a remote annunciator lamp, and a corridor dome lamp, or other similar type application.