Check the listing for details. Nutone Intercom Master Station IM-4006D brown and black. Condition: Used. Listed at 1250.00 USD. This Nutone Intercom Master Station IM-4006D in brown and black is the perfect addition to your home security system. With its audio intercom feature, you can easily communicate with visitors and strangers at your doorstep. The battery is included, making it convenient to use and install. The IM-4006D is designed for indoor use only and comes with a range of features, including a battery, making it a reliable and efficient option for your home improvement needs. It is compatible with various home security systems and is easy to install, making it an ideal choice for anyone looking to upgrade their home security.Serviced by an authorized Nutone service center and everything works great. Tape player works greatComes with a terminal board that uses 6-amp 6 wire flat ribbon wire but can aslo be used with your existing 4006 terminal board