The ULTRA Power Supply Tester is a comprehensive 7-in-1 power output tester that is sealed to ensure accurate and reliable results. With the Ultra brand backing it, this power supply tester is a high-quality tool for testing various power supply outputs. Designed to provide precise measurements, this unit is ideal for computer professionals and enthusiasts looking to ensure their power supplies are functioning properly. Trust the ULTRA Power Supply Tester to deliver consistent and trustworthy results every time.