Product Description Product Features Compact Size: Easy to carry, convenient to operate, and durable to use. LCD Display: Features a 5-digit LCD with a clear backlight display, offering a maximum reading of 99999. The grey font is not dazzling and remains visible even in low light. Non-contact Measurement: Utilizing embedded MCU, optoelectronic, and semiconductor laser technology, this tachometer ensures accurate non-contact measurements. Switchable Measurement Modes: Offers manual and automatic modes to cater to different requirements. Adjustable Laser Gear: Adjustable laser power settings (high/low) accommodate various distance requirements while ensuring user eye protection. Automatic Record: Capable of automatically recording 50 sets of data with customizable sampling intervals for diverse needs. Automatic Shutdown: Powers down automatically after 30 seconds of inactivity. Additional Features: Records maximum, minimum, and average values for enhanced functionality. Specifications Material: ABS Color: Grey Power Supply: 2 AAA batteries (not included) Power Consumption: 25mA (laser low power), 40mA (laser high power) Operating Temperature: 0°C to 50°C Storage Temperature: -20°C to 60°C Display: 5-digit LCD, Max: 99999 Available Distance: 50mm to 500mm Sample Time: 0.5s (over 120RPM) Measuring Range: 2.5RPM to 99999RPM Resolution: 0.1RPM (2.5RPM to 999.9RPM), 1RPM (1000RPM to 99999RPM) Accuracy: ±0.05%rdg + 1 digit Item Size: Approx. 11 x 6 x 2.5cm (4.33 x 2.36 x 0.98in) Item Weight: Approx. 72g (2.54oz) Package Size: Approx. 19.3 x 12.5 x 4.5cm (7.6 x 4.92 x 1.77in) Package Weight: Approx. 143g (5.04oz) Note Please read the user manual before use. Packing List 1 Digital Tachometer 3 Reflecting Tape Marks 1 User Manual (English)