ATEC CLASS II Triaxial vibration sensor with CertificationCondition Monitoring SystemPhantom is the best wireless battery powered monitoring device available in the market today.Erbessd Instruments ATEC CLASS II Phantom PuckSKU: ATEC CLASS IIQuantity*Tech Specs Triaxial vibration sensor with Certification Frequency Range: 0.5 Hz - 10 kHz (x,y) 0.5 Hz - 5.1 kHz (z) Amplitude Range: 8, 16, 32 G Resolution Lines: 6400 Internal Temperature: yes