Multi language phone call blocker Sentry blocker 

Caller id box features:

1. FSK/DTMF dual system;

 2. Automatic updated time and date when a new call coming.

 3. Permanent storage of 1500 numbers in blacklist

 4.100 incoming call records

 5. 50 outgoing call records

 6. 4 levels of LCD brightness adjustable

 7. One-key-set of block on incoming calls

8. Battery-saving

 9. Desk/Wall mountable

Remarks:

 Details pictures of this call blocker device 

What kind of calls can be blocked ?

1) Robocalls

2) Telemarketing Calls

3) Blocked number calls

4) No name no number calls

5) Automated or computer generated calls

6) Market research calls

7) Fax Calls

8) Nuisance Calls