Vibration-Seismic Security Sensor Border on the Lock Reliable Perimeter Intrusion Detection for Long-Term Applications. ► Early warning sensor; ► Concealed intruder detection; ► Suitable to protect perimeters with no fencing. CVD-115 security sensor is a vibration-seismic security detector applied to detect unauthorized attempt to cross the secured area by crossing the perimeter line without any fencing. In instantly transfers fencing or soil vibrations into electrical signal which is then transmitted...