The UL22DM is a shallow depth, UL listed, fire signaling device for mass notification and emergency communications. It provides superior voice intelligibility and high efficiency performance in a complete, 2' x 2' lay-in ceiling tile replacement loudspeaker system. The UL22DM includes a front-facing electrical box for attachment of customer supplied, single- or dual-gang devices such as fire signalling lights, cameras or wireless access points. It has a high durability, powder coated and perforated steel baffle, with a lightweight speaker assembly that includes an 8", fire retardant speaker with 10 oz. magnet and 4 Watt, 25/70V transformer with rotary tap selector and a line supervision capacitor. By providing high intelligibility, visual appeal and typical Quam reliability, the UL22DM is designed for a wide range of demanding applications. The UL22DM also provides four (4) seismic tie-off points to comply with local codes in most jurisdictions. The fully assembled UL22DM can be installed in a ceiling tile grid in a few minutes, which saves installation labor and enhances your profits.