Description: LED flashlight lighting function facilitates line checking construction in dark environment. Universal interface and plug and play design makes the tester convenient to use. Backlit supported design makes the tester clear to read the measurement value. It is constructed of plastic material. The length of the product is 12.5cm, the width is 3.4cm, the height is 1.7cm. It is suitable for home, industry. Self-calibration allows self-adjusting test parameters according to actual test requirements. Item Name: Optical Power Meter Material: Plastic Charging Time: 20h Working Current: LED flashlight lighting function facilitates line checking construction in dark environment. Universal interface and plug and play design makes the tester convenient to use. Backlit supported design makes the tester clear to read the measurement value. It is constructed of plastic material. The length of the product is 12.5cm, the width is 3.4cm, the height is 1.7cm. It is suitable for home, industry. Self-calibration allows self-adjusting test parameters according to actual test requirements.