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This non-contact tachometer is a professional and practical motor speed meter to measure the revolutions per minute(RPM) with wide measuring range and high resolution
01uT (magnetic)
Real machine modeling design
velocity and displacement
Portable Hand-Held Security Metal Detector (GP 3003B1), GP 3003B1 Broadband Amplifiers This non-contact tachometer is a1) Highly sensitive 2) Simple and convenient to use, no adjustment is required; 3) The detection distance will not be changed when the battery voltage drops from 9V to about 7V; 4) Low power consumption, can work for 40 hours continysly; 5) There is automatic and continues alarm when the battery is used up; 6) Switch on off audio prompt function; 7) Witch external rechargeable socket hole; 8) Has audio, light and vibration hand off switch 9) Detection
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