Features Multiple Usages: The digital meter is widely used for real time UV index measurement, UV index comparison and UV index tracking detection, etc. Excellent Sensor: The UV tester adopts imported sensor, integrated filters, has good cut off characteristics, and has stable and reliable performance. High Accuracy: Advanced circuit design helps reduce interference, measure UV with high accuracy and efficiency, and precisely match the UV spectrum. LCD Display: The large size LCD screen is used to display data, and the reading is clear and convenient, greatly improves the measurement efficiency. High Performance: The response spectrum range is 280‑400nm, with high resolution and quick response time, easy operation and strong practicability. Specification: Item Type: UV Index Meter Material: ABS Battery: 1.5V AA battery x 2 (battery not included) Uses: Real time UV index measurement; UV index comparison; UV index tracking detection Response Spectrum: 280-400nm Measurement Interval: 0-15.0 Resolution: 0.1 Response Time: T≤0.5s Measurement Accuracy: ±10% Package List: 1 x UV Index Meter 1 x User Manual Note: 1. Before measuring, please keep away from buildings, trees and other obstacles that will block the sun.2. Under various weather conditions, the UVI index varies greatly, please measure multiple times to take the average to reduce the error. Package List 1 x UV Index Meter 1 x User Manual