Caller ID Blocker Dual FSK/DTMF system Supports blacklist capacity of up to 1500 numbers, including 5000 pre-programmed scam numbers Block telemarketers, scammers, and other unwanted callers. Key Features: Extensive Blacklist Capacity: Store up to 1500 blocked numbers and area codes, plus 5000 pre-programmed scam numbers. Flexible Blocking Options: Add or remove numbers from the blacklist manually, and switch between blacklist and whitelist modes to customize your call preferences. Area Code Blocking: Block entire area codes or the first few digits of a number (limited to 10 groups), preventing calls from unwanted regions. No Caller ID Call Blocking: Blocks all incoming calls without caller ID, reducing unwanted interruptions. Call Management: Review incoming and outgoing calls using UP/DOWN keys on the device, keep track of call history. Adjustable Ring Settings: Choose between 0-ring or 1-ring for blocked calls, blocking as per your preference. Automatic Tone/Pulse Recognition: Supports both Tone and Pulse dialing systems for compatibility with various telephone networks. LCD Display: Backlit screen shows date, time, and day of the week, with five levels of brightness adjustable for viewing in any lighting condition. Controls: Equipped with keys such as SET, OUT, BLACKLIST, REMOVE, and navigation buttons for operation. Specifications: Type: Caller ID Blocker Model: CT-CID803 PLUS Material: ABS plastic Color: Black LCD Display: Backlight with adjustable brightness Keys: SET, OUT, BLACKLIST, REMOVE, UP/DOWN navigation Product Size: Approx. 10 x 8.6 x 4.4 cm (3.9 x 3.2 x 1.7 in) Product Weight: Approx. 87g (3.1oz) Package Size: Approx. 10.2 x 9.5 x 5 cm (4 x 3.7 x 2 in) Package Weight: Approx. 124g (4.4oz) Package Includes: 1 x Caller ID Blocker 1 x Network Cable 1 x User Manual (English) This device requires Caller ID service from your network provider. All calls without Caller ID will be blocked automatically. Model design may vary due to random logo delivery. Protect your privacy with this Caller ID Blocker.