GVD 1000-17 Voltage Tester is a easy to use tool designed to enhance safety and efficiency for professionals working with electricity. IP67 rated, the tool guarantees durability against dust and water immersion, while its robust rubberised housing provides protection against drops from up to 2m. Offering a dual voltage detection range from 24 V to 1000 V AC and with high sensitivity for the 24 V range, also features an automatic self-test conducted at startup and every 5 seconds to confirm functionality during use, This voltage detector is essential for electricians who need to perform quick voltage checks in a range of environments - from tough construction sites to clean indoor settings. Whether you're troubleshooting electrical installations, checking power outlets, or ensuring circuits are grounded.