The CPR Call Blocker V5000 is a call blocker device that allows users to block unwanted numbers with the touch of a button. It features an RJ11 telephone jack connector and supports one line. The device is designed in black color and has a phone style. It is a landline call blocker that interfaces with DSL (RJ-11) and has a model number CPR V5000. The brand of the device is CPR Call Blocker and it is categorized under consumer electronics, home telephones and accessories, and caller ID devices.