- Viking handsfree speakerphone - Vandal Resistant Features: 14 gauge, louvered, stainless steel faceplate with stainless steel speaker/mic screen, heavy duty metal keypad and ?Call? button - Optional Enhanced Weather Protection (EWP) - Yellow ?in use? LED - Volume adjustments for microphone and speaker - Advanced call progress detection: disconnects on busy signal, return to dial tone, CPC reorder tone, maximum call time out and selectable silence time out - Selectable auto-answer feature - Selectable push button disconnect - Zinc plated steel rough-in box with (2) 3/4? conduit knockouts - Optional VE-6x7 Surface Mount Box available - Selectable maximum call time - Selectable VOX switching speed - Made in the USA - 1 Year manufacturer"s warranty VKK17003BNEW