Multi-Function Meter: Voltage and continuity testers are designed to test AC and DC voltage measurements (including three-phase AC), three-phase AC indicator phase, power-off test, test RCD, simple or "L" pen measurement, self-test and other functions. Scope of application: It is a perfect tool for electricians, to quickly measure voltage levels in any hostile environment. It can work with foundry, electronics, manufacturing, defense, electric power, petroleum and chemical industry. Large LCD Monitor and Flashlight: With a screen LCD and a built-in flashlight, you can read all numbers easily in dark conditions. CE Qualified, CAT III 690V, CAT IV 600V: Designed to safely and accurately solve a variety electricity for cars and homes. You can use it easily. Waterproof: Complies with IP65 waterproof rating. Safe to use even in rainy or humid locations.