How would you know if your phones were tapped? How would you know if they were safe to talk on? The B-400 Tap Alert™ protects your single line phones from eavesdroppers.

The B-400 will indicate if a WIRE TAP has been activated. It automatically records all activity on the line

Features a MASKING SOUND to the line when not in use and automatically stops when a call is placed or received

Uncovers most types of phone taps and bugs including:

Harmonica bugs or Infinity Transmitters
Series or Parallel devices
Hook Switch phone activated bugs
How it works:

The Tap Alert™ B400 alerts you automatically with an alarm light if a line-activated telephone wiretap has been placed on your line or phone instrument. The alarm light will also illuminate when an extension phone has been picked up anytime, day or night.

If the alarm is activated in your absence, the light will remain intact until you reset the system. This assures you of 24 hour protection against invasion-of-privacy equipment.

The Tap Alert™ B400 can be left unobtrusively on your desk as a regular accessory or concealed in a drawer or other hidden area.