Enhance your peace of mind and regain control over your phone line with the CT-CID803 PLUS Caller ID Box Call Blocker. Designed to stop nuisance calls and protect your privacy, this device is perfect for anyone tired of unwanted interruptions. Block Unwanted Callers: Effortlessly block nuisance calls with the simple press of #2 on any connected telephone handset. This feature ensures that you can enjoy your day without constant interruptions from telemarketers or scammers. FSK/DTMF Dual System: The device supports both FSK and DTMF systems, ensuring compatibility with a wide range of telephone networks and providing reliable performance. Extensive Blacklist Capacity: With the ability to store up to 1500 numbers in its blacklist, this call blocker offers extensive protection against unwanted callers. Additionally, it comes pre-programmed with 5000 known scam numbers, giving you a head start in blocking potential threats. Manage Blacklists and Whitelists: Easily review and delete numbers from your blacklist, and switch between blacklists and whitelists to customize your call filtering preferences. This flexibility allows you to tailor the device to your specific needs. Automatic Tone/Pulse Recognition: The CT-CID803 PLUS automatically recognizes tone and pulse dialing modes, ensuring seamless integration with your existing phone system. Clear LCD Display: The LCD screen displays the date, time, and week, providing you with essential information at a glance. You can also review incoming and outgoing calls using the UP/DOWN buttons, making it easy to keep track of your call history. Adjustable LCD Brightness: Customize the display to your liking with five levels of brightness adjustment, ensuring optimal visibility in any lighting condition. Random Delivery of New and Old Models: Please note that the product is available in both new and old models, and delivery will be random. Both models offer the same high-quality performance and features. Take control of your phone line and enjoy a quieter, more peaceful home environment with the CT-CID803 PLUS Caller ID Box Call Blocker. Perfect for fixed phones and antique landline telephones, this device is an essential tool for anyone looking to stop cold calls and protect their privacy.