This RadioShack answering machine is a reliable device with extended capacity to record messages. It has a black color, one-line input, and can accommodate up to three mailboxes. The answering machine features a clock, remote message retrieval, and a date/time stamp. It is a DSL interface unit with connectors for telephone line and DSL (RJ-11), and has been tested and confirmed to be in working condition. The model number of this extended capacity digital answering system is 040293000158 and the brand is RadioShack. Ideal for use in homes and small offices, this unit is a great addition to your telecommunications setup.