- Viking vandal resistant, 14 gauge stainless steel faceplate with enhanced weather protection (EWP)- Heavy-duty metal push button and mounting gasket - Flush mount using the included rough-in box or surface mount using an optional VE-5x5 backbox - Yellow call progress/ night light LED - New high output speaker amplifier with volume adjustment POT - Microphone volume adjustment POT - 24 volt talk battery - 20 Hz ring generator (3.0 REN ring load maximum) - Selectable ring cadence (standard or 2 short rings)