Model #ADP1 Door Phone Analog Door Speaker Phone The ADP1 is a convenient remote,weather-resistant, hands-free two-way terminal device for telephone systems. The unit is telephone line powered and includes adjustable microphone and speaker volume levels as well as a selectable Auto Answer feature to allow for remote audio monitoring of the area where the ADP1 is located. The ADP1 also includes an adjustable and defeatable call timer and can respond to forward disconnect signals. The ADP1 features a heavy-gauge stainless steel gasketed faceplate and plastic cone speaker with punctureresistant screen.The ADP1 is designed to fit in most indoor and outdoor dual gang electrical boxes (user supplied). A dress bezel is included with the unit for trimming out rough openings in flush mount applications. Read More   $166.86