This vandal proof wall phone is constructed of industrial grade stainless steel and is equipped with an emergency ringdown operation , 10” armored cord handset with an internal steel lanyard for added strength, magnetic hookswitch (does not require magnetic handset), RJ11 jack, tamper proof hardware, and a back plate for easy installation. The ring-down or no dial operation of this phone is designed for receiving or initiating calls through systems that recognize the off-hook condition and route the calls accordingly. 18” or 32” handsets and volume control options are also available in the list of available features below as well as additional ADA options. Surface mount installation.