This device combines essential capabilities for reliable operation, clear visibility, safety monitoring, and data logging. It is designed to support voltage work with straightforward usability and a compact data history. Key benefits Auto power on: starts up quickly when powered, reducing setup time and ensuring measurements are available without manual steps. LCD backlight: provides easy readability of measurements in various lighting conditions, including dim workspaces. voltage output alarm: delivers immediate alerts to protect users and equipment from unsafe HV conditions. 99group data storage: stores up to 99 data groups, enabling organized, longterm tracking of results and trends. What it does Enables automated startup, quick access to readings, and dependable performance in daily use. Delivers clear, legible information on a backlit display for onthespot reading and verification. Monitors voltage output and issues alerts to prevent unsafe or outofspec conditions. Keeps a substantial history of measurements and test results for comparison, reporting, and compliance. Compatibility and use Suitable for laboratory benches, field service, and training environments where voltage output is tested and monitored. Fits into standard testing setups that require reliable startup, readable display, safety alerts, and data logging. Attributes and performance Function: auto powering, visibility, safety alerting, and data retention support efficient workflows. Performance: designed for responsive startup, reliable display readability, immediate alarm signaling, and organized data storage. Data management: 99group storage provides ample room for logging multiple test sessions and maintaining traceability. Use scenarios Electronics lab testing: start measurements quickly after powering on, monitor HV output on a backlit display, and save results for each test group in the 99group history. Field service inspection: perform HV checks on equipment outdoors or in dim environments, rely on the LCD backlight for readability, and receive an alarm if abnormal HV levels are detected while logging the session data. Training and demonstrations: demonstrate realtime HV monitoring with immediate alerts, while collecting distinct data groups for later review and discussion.