The E-60-IP's compact size allows it to be mounted in a standard double gang electrical box. The E-60-IP is available in four different attractive finishes to match your door hardware, light fixtures, etc. Replacement E-60 faceplates (PNL60) can be purchased separately and are available in all four standard finishes. The E-60-IP's blue LED continually provides light for locating the push button in dark locations, flashes during dialing and automatically lights again when the call is answered. All programming parameters, including phone numbers and location numbers, are stored in non-volatile memory, requiring no batteries. All units are PoE powered.