The GPT/GPI-800 Electrical Safety Testers (EST) are designed for AD/DC Withstanding Voltage test and Insulation Resistance test (IR) in order to provide a safe and accurate test environment for the operator. With thoughtful design described in 1-2. Feature insures a safe operation environment of high voltage test to protect user from hazardous impact. The Electrical Safety Testers comply with the requirement of the electrical equipment & appliance control ordinances and JIS, CSA, UL, BS and other overseas standards as well. The testers can be used for withstanding voltage test of the various types of electrical and equipment and components. The GPT/GPI-800 series are based on the family of GW withstanding voltage tester including AC Withstanding Voltage test, DC Withstanding Voltage test and Insulation Resistance test. Features The GPT/GPI-800 series offer several other features: 1) Current and output voltage setting A safe way to set the current and output voltage without high voltage activated. 2) Easily and quickly setting with front panel control A user-friendly interface provides user an easy and quick way to set all parameters. 3) Testing time Use micro processor to control testing time. 4) Adjustable ARC detect level The ARC detect level can be adjusted with front panel control. 5) Adjustable output voltage during test The output voltage can be adjusted during testing that add an operation flexibility. 6) An alert indicator for high voltage A flashing red LED indicates dangerous situation during high voltage output is activated. 7) Remote I/O controller In addition to the 9 pin remote I/O controller to control START/RESET, it also provides PASS/FAIL/TEST signal for professional use.