CPR V5000 Call Blocker for Landline Phones - You Can Manually Block All Calls with the Big Red Button - Pre-Programmed with 5,000 Known Nuisance Numbers - Caller ID is Required

COMPATIBILITY: For traditional analog landline phones and services from providers such as AT&T, Verizon, Frontier Communications, CenturyLink, and Brightspeed. Not compatible with internet-based or digital phone services (VoIP), including Vonage, Ooma, Xfinity Voice, and Quantum Fiber. IMPORTANT: This device requires Caller ID service and an analog telephone line. Without Caller ID, incoming numbers cannot be identified or blocked. No mains power required - simply plug it into your phone line and use. Powerful Blocking, Made Simple: Preloaded with 5,000 verified scam and nuisance numbers. If a new or spoofed number gets through, the large BLOCK NOW button makes it simple to instantly block it - up to 1,500 additional numbers at your command. Realistic & Reliable Protection: While no device can stop 100% of spam (scammers constantly change numbers), this gives you the ability to shut down repeat offenders quickly and effectively - offering greater control than passive filters alone. Hassle-Free Design: NO POWER supply needed, NO APP, and NO SUBSCRIPTIONS. It is simple to install, with a clear screen and loud button click for added confidence. Designed with seniors in mind, it is ready to use and easy to maintain. For even stronger protection, you can pair it with your phone providers spam filtering service