The UT18 Series Voltage Continuity Testers efficiently test AC/DC voltage, 3-phase voltage, phase sequence, and continuity. Electricians rely on these tools for quick and accurate voltage measurements. Additionally, they meet CAT IV 600V and IP65 standards, ensuring reliability and durability in various environments. With their versatile design, these testers perform well in demanding conditions. However, avoid using this series with 110V electrical systems.