Some calls are just a pain in the neck and we sometimes wish we can make them go away for good. Well, we actually can. Block nuisance calls with the simple push of a button. Easily create a blocklist of your own by pressing the red BLOCK button when an unknown number is received to block that number permanently and automatically add it to your list. Also automatically blocks all unknown calls when feature is switched on. Features non-volatile memory to retain blocked numbers in memory even when unplugged. This caller ID blocker is made to use with a landline phone without a call block feature or with limited call block registration capability (under 30 numbers), and especially useful for elderly persons targeted by fraud. Compact and neat, this little box plugs into your landline phone and leaves a minimal footprint in your home. See more

Simply press the BLOCK button to block an incoming call permanently. Powered by your phoneline. Uses batteries as backup. Requires home-based phone service with Caller ID service. Works with most landlines and VoIP services. Automatically block unknown and private numbers by turning on the BLOCK NO CID feature. 4,000 unwanted phone numbers Caller ID memory for incoming calls.