The CXDA800 Exit Alarm provides an immediate audible and visual alarm indication of unauthorized exit or entry of mechanically secured doors. The CX-DA810 Door Prop Alarm delivers an audible and visual alarm when doors are being held open for more than a specified time. Compact and attractive, these UL Listed door alarms are feature-rich and designed for easy installation - with no external wiring required. Features include immediate triggering with LED and buzzer sounds, a loud 105 dB alarm, 9 VDC battery operation, and a low-battery alert. The 'Universal' door alarms can be mounted on a door or frame, and on either in-swinging or out-swinging doors. They are compatible with the widest range of industry-standard mortise cylinders and cams, and can easily integrate with existing master key systems. A mortise cylinder with two keys, either keyed alike or keyed differently, and a cylinder installation tool are also included. Both models are offered in grey or black, in either indoor or weatherized outdoor models, and are UL Listed.