Introducing the Viking SP242-E10 Intercom and Entry Accessory, designed for seamless communication and enhanced security. This innovative device features an alternate action call button, allowing you to easily place or cancel calls. With intelligent call progress detection, it automatically hangs up on silence, busy signals, or timeouts, ensuring efficient operation. Powered by your telephone line, it offers adjustable microphone and speaker volume for personalized use. Enjoy the convenience of a programmable maximum call length and a selectable auto-answer feature for remote monitoring. Experience two-way handsfree communication and customizable VOX switching speed. Built to last, its vandal-resistant aluminum faceplate and heavy-duty stainless steel call button provide durability. Install it effortlessly with the included rough-in box or opt for surface mounting. Elevate your communication experience with the Viking SP242-E10 – order yours today!