Specification:
Item Type: Led Handheld Tachometer
Working Method: Photoelectric
Highest Reading: 99999
Display Mode: LED
Number of Test Leaves: 2-9
Automatic Shutdown: 1 Min
Weight: Approx.69g/2.4oz
Material: Plastic + Electronic Components
Battery: 1 x CR2032 220mAh Replaceable Lithium Battery (Main Unit with Supporting Built-in Battery)
Applicable to: RC Airplane, Duct, Propeller Speed Test of Propeller

How to Use:
1. Easy to use. When the switch is turned on, select the number of blades on the propeller, the distance between the rotating propeller and the propeller is about 5~10cm.
2. You can start reading. After the measurement, the screen will display the maximum measurement value with a blue backlight, which is easier to read.

PackageList:
1 x Handheld Tachometer
1 x Lanyard
1 x Battery

Notice:
1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.
2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. The tachometer depends on the light source! In the absence of a light source! There is no response. For example, under the sun, your tachometer should be upright and the lens should be facing the direction of the light source.