Triplett VDL48 DC Voltage USB Datalogger

Built for reliable, long-term voltage monitoring, the Triplett VDL48 DC Voltage USB Datalogger is a compact multimeter-class datalogger that streamlines troubleshooting and compliance reporting across telecom, data center, security and industrial applications. This single-channel device monitors DC voltages up to 48V and logs as many as 31,320 readings with a user-adjustable sampling rate from 1 second to 24 hours, so you can capture short transients or long-term trends without manual intervention. The built-in 2000-count LCD plus dual LED indicators make field verification quick, while programmable high/low visual alarms immediately flag excursions that could affect UPS systems, surveillance power rails or LED lighting networks. Recorded data transfers easily via USB in PDF or CSV format, enabling rapid analysis and integration into maintenance workflows and monitoring platforms. Rugged and straightforward to operate, the VDL48 reduces on-site testing time and supports better decision making for technicians and managers responsible for security, surveillance, networking and power infrastructure. Add the Triplett VDL48 to your toolkit for dependable voltage monitoring and simplified reporting—ideal for data centers, telecom closets and security installations.

• Continuous unattended DC voltage monitoring to 48V helps prevent downtime and catch intermittent faults before they escalate
• Stores up to 31,320 readings with adjustable sampling from 1 second to 24 hours for detailed trend analysis and long-term logging
• Intuitive 2000-count LCD and LED status indicators provide at-a-glance alarm and recording confirmation for fast field checks
• High/low visual alarms alert technicians immediately to out-of-range conditions, improving response time for critical systems
• USB export to PDF or CSV simplifies reporting and integration with maintenance, security, and surveillance records