- 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- 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