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ADVANCED TECHNOLOGY - This is the only high capacity call blocker available in the market with an LCD display that allows you to block (or blacklist), review and remove up to 1,500 phone numbers at any time.T-Lock / Pro Call Blocker. Block unwanted calls. Stops nuisance callers, potential phone frauds & scams. You can take total control of your incoming calls by manually blacklisting unwanted callers for good.
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EASY TO SETUP & USE - Simply press a button to BLACKLIST numbers forever! Turn ON & OFF feature to Block calls with no caller ID (shown as UNKNOWN, OUT OF AREA, PRIVATE, etc)
HIGH CAPACITY - Blacklist 1500 incoming call records by phone number. Block up to 10 incoming area codes. Store/review last 100 incoming call records (add to BLACKLIST when desired). Store/review last 100 outgoing call records (add numbers to BLACKLIST when desired). Block outgoing calls by number prefix (also up to 1,500 call records). Non-volatile memory saves stored data when disconnected from the phoneline.
LINE POWERED - Requires no external power supplies or batteries. Compatible with FSK/DTMF, PSTN landlines, and VOIP services such as Vonage, MagicJack, Verizon FIOS, Comcast and others.UNIQUE EEPROM - Uses EEPROM technology to prevent losing stored blacklisted numbers when device is disconnected from the telephone line.
Additional information: Read the latest instruction manual, please search the link below: http://yunpan.cn/cFzMqsFKh3dwc (Password:0a65). Package list: Call blocker Manual Specifications: 1.Three-line LCD screen Caller ID Box 2.advanced controller design 3.calls memories 4.batteries low voltage indication