The ITT 5609R-42-52 is a Type 5609 Series Rear-Mounted Industrial Telephone. This phone is designed to be installed in a wide range of office and industrial environments, and is specifically designed to withstand demanding conditions. It features a rugged, stainless-steel construction, a waterproof and dustproof rating of IP54 and a vibration-resistant design. The 5609R-42-52 also includes an adjustable ringer volume and a range of features such as dual-call blocking, call forwarding, call waiting, and message waiting. This telephone offers a reliable and secure communication solution for any industrial setting.