Precise Voltage Monitoring: This digital voltmeter accurately measures AC voltages from 12-500V with a minimum error of +/- 2%. It operates efficiently within a temperature range of -25 to +55℃, ensuring reliable operation in a variety of environments. Rugged and : This AC voltmeter features a high-strength plastic housing to withstand shock and harsh environments. The large digital display enhances visibility, allowing for clear and easy-to-read readings even from a distance. User-Friendly Installation: This voltmeter features built-in screw-type wiring for easy installation. Its user-friendly design enhances safety and convenience, making it an ideal choice for both novice and professional electrical system monitors. Enhanced Durability: This digital AC voltmeter features a dustproof base to prevent dust ingress, significantly extending its service life and maintaining long-term accuracy, making it a reliable tool for continued use in industrial environments. Versatile Applications: This voltmeter is ideal as a signal indicator, warning signal, or emergency signal in a wide range of applications, including power, telecommunications, machine tools, marine, textile, printing, and mining machinery. Quantity:3PCS Color:As Shown Material:plastic Package Contents: 3 * voltage meter indicators Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.