Professional UV Light Meter: The UV-340A is a high-quality UV light meter designed for professional use Exclusive UV Sensor Technology: Equipped with an exclusive UV sensor structure, this meter ensures accurate measurements by employing a cosine correction filter User-friendly Features: The UV-340A comes with a built-in zero button, making it easy to calibrate the meter before each use. Its microprocessor cuit guarantees high reliability and durability LCD Display for Easy Readout: Featuring a clear and easy-to-read LCD display (size: 18 x 45mm), the UV-340A provides convenient readouts of measured values Compact and Design: With its heavy-duty and compact housing case, the UV-340A is designed for maximum portability and lonvity. Weighing only 251g (0.55LB), it is lightweight and easy to carry, Manufacturer: ZXZZAS