Descriptions:
RPM range is 2.5 - 99.999 RPM. Accurate measurement without touching the object. 5 digit LCD display screen. Auto zero adjustment. Stores the newest， minimum and maximum readings. Laser detection up to about 20 feet.

Main Features:
EXTREMELY ACCURATE
Highly accurate non-contact digital tachometer with high speed laser-aim operation and instant readings from 2.5 to 99，999 RPM

EASY TO READ
RPMs are measured at a one second sampling time and readings are displayed on a easy-to-read LCD screen

NON-CONTACT DESIGN
24-inches of reflective tape for non-contact diagnostics and measurements

DISTANCE RANGE
Accurate to + / - 0.05 percent and capable of measuring at a distance from 2 to 20 inches

HANDHELD / PORTABLE
Compact and lightweight， power supply by 3 x AAA battery ( not included )

Specifications:
- Display: 5-digit LCD display， the word high is 18mm
- Test range: 2.5 - 99999RPM ( rev / min )
- Resolution: 0.1RPM
- Accuracy: less or plus 0.05 percent of reading
- Sampling time: 0.8 seconds ( more than 60RPM effective )
- Test Range: automatic
- Storage: maximum， minimum， and most recent values
- Detection range: 50 - 500mm
- Time base: 6MHz crystal
- Circuit: large-scale integrated circuits， highly integrated single-chip
- Power consumption: approx. 40mA ( during operation )
- Operating temperature: 0 Deg.C－50 Deg.C
Brand: WHDZ Model Number: DT2234A 0.220 Package weight: 0.255 kg
Product Size(L x W x H): 16.00 x 7.00 x 3.70 cm / 6.3 x 2.76 x 1.46 inches
Package Size(L x W x H): 17.50 x 11.00 x 5.00 cm / 6.89 x 4.33 x 1.97 inches Package Contents: 1 x WHDZ DT2234A Digital Tachometer， 1 x Reflective Tape， 1 x English User Manual