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The CPR Call Blocker Shield Call Blocking Device blocks robocalls and other unwanted calls from getting through to the phone. The user can add other phone numbers to block, and it provides a list of recognized problematic numbers. By pressing the Block Now button on Call Blocker Shield, the number will be added to the device's memory, the call will end, and the number will be permanently blocked.
Note: Caller ID should be enabled on your telephone line for the Call Blocker to work effectively
CPR Call Blocker User Manual
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