Designed for both DIYer homeowners tackling home maintenance and professional electricians working on complex job Accurately detects voltages and circuit condition with advanced technology to ensures user during electrical work Safely diagnose wiring issues during outlet installations , appliance repairs , or routine electrical checks in residential and commercial settings This versatile tester integrates multiple functions including not voltages testing , continuity checks , and phase identification to meet various electrical needs Features sound and visual alerts for instantly voltages feedbacks and insulated housing with anti slip grip for protections during operations, Manufacturer: BULAIDAI