Compact 2TB USB 3.0 External Hard Drive Black High Data Transfer Speed

Compact 2TB USB 3.0 External Hard Drive Black High Data Transfer Speed Description

Portable High-precision Digital Tachometer with Laser Manual/Automatic Measurement Speedometer LCD Display with Backlight Maximum Minimum Average Value Automatic Record Speed Measurement Speed Counter

Features:
[Compact Size] Easy to carry, convenient to operate and e.
[LCD Display] 5-digit LCD clear display with backlight, 99999 maximum reading, not dazzling in grey font, visible in low luminance environment.
[Non-asurement] Based on embedded MCU, optoelectronic technology and semiconductor laser technology, this tachometer realizes accurate non-asurement. 
[Switchable Measurement Modes] Manual / Automatic mode optional, meeting various requirements.
[Adjustable Laser Gear] Adjustable laser power (high / low), adapting the far / near distance requirement to protect user' s eyes.
[Automatic Record] Automatically recording 50 sets of data, and the sampling interval time could be reset to meet different needs. 
[Automatic Shutdown] Automatic shutdown in 30 seconds without operation.
[Additional Features] Capable of recording the maximum, minimum and average values.
Specifications:
Material: ABS
Color: Grey
Power Supply: 2 * AAA battery (NOT included)
Power Consumption: 25mA (laser in low power), 40mA (laser in high power)
Operating Temperature: 0~50
Storage Temperature: -20~60
Display: 5-digit LCD, Max. 99999
Available Distance: 50mm~500mm
Sample Time: 0.5s (over 120RPM)
Measuring Range: 2.5RPM~99999RPM
Resolution: 0.1RPM (2.5RPM~999.9RPM), 1RPM (1000RPM~99999RPM)
Accuracy: 0.05%rdg + 1digtal
Item Size: Approx. 11*6*2.5cm / 4.33*2.36*0.98in
Item Weight: Approx. 72g / 2.54oz
Package Size: Approx. 19.3*12.5*4.5cm / 7.6*4.92*1.77in
Package Weight: Approx. 143g / 5.04oz
Note:
Please read the Users Manual before use.
Packing List:
1 * Digital Tachometer
3 * Reflecting Tape Mark
1 * Users Manual(English)