Features: Ensures safety of your devices with the AC220V Voltmeter Square Tester, capable of monitoring voltage from 50 to 500V to prevent damage from voltage fluctuations. Featuring a dustproof base and a digital tube indicator, this voltmeter is for durability and easy readability, making it a reliable tool in any setting. For electricians, electronics enthusiasts, and professional who need precise voltage monitoring, ensuring performances and safety. Perfect for use in homes, offices, workshops, and various industrial setting, this voltmeter provide convenient and accurate monitoring of electrical equipment voltage. With its size and lightweight designs, this voltmeter is easy to install and transport, offering functionality across multiple applications. Specifications: Material: Plastic Shell Output/input voltage: AC220V/380V(Universal) Voltage measurement ranges: 50-500V Measurement tolerance: ± 2% Ambients temperature: 0-50℃ Size: About. 59x30mm/2.32x1.18in Color: Yellow/Green/Redness/White/Blue Package Includes: 1pc Voltmeter note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.