Spec Sheet Preview: The UPG flush plastic housings are designed to be used with the Alpha Communications® / S.T.R.™ modular series door entry stations and system annunciators. There are seven (7) configurations available in single and double width varieties. The UPG housings are designed to be used in conjunction with the MT series Modular Frame(s). For larger configurations, multiple UPG housings and MT frames may be 'ganged' together. The UPG housings have snap-in stand-offs to allow mounting of the individual modular snap-in&n …