The VV600 Plus seismic detector is designed to detect attempts to break into vaults and safes. This seismic detector reacts to the characteristic vibration patterns of all breaking-and-entering tools, such as hammers, drills, diamond saws, hydraulic pressure tools and thermal tools like welding torch and thermal lance. It will sense vibrations that occur within a 3 to 14m radius of where it is mounted, depending on the material and design of the protected object. At the same time this detector will allow for normal human activity around the protected area without the risk of creating unwanted alarms. To achieve this high level of accuracy, the detector features "three detectors in one". All three channels (counting, integration and explosion) analyse the signal frequencies, duration and amplitude, in order to differentiate between random environmental disturbances and real intruder attack. The end result is a detector with excellent detection and false alarm immunity. The VV600 Plus series provides two different test functions- automatic or manual activated. You can choose between internal test of the detector electronics or, by using the test transmitter VT705P, do a functional test of the detector and its physical contact to the protected object. A complete range of accessories is provided for all kinds of applications to achieve the highest security.