The AM492-series Vandal Resistant Apartment Entrance Panel is a modular series for use with TekTone apartment intercom stations. Panels are equipped with a Mylar, voicefrequency response speaker protected by a louvered panel and perforated aluminum material. The speaker panel can accommodate up to 18 push buttons. For more than 18 apartments, the AM492 is used with the AM490/12 or AM490/22 push-button add-on panel.