Extech Instruments SDL900 AC/DC Magnetic Meter and Data Logger

Amazon

Memory stores 99 readings manually Data logging feature records readings with date and time stamp on an SD card (included) in Excel format N pole/S pole indicator Zero button for DC measurement Data Hold and Min/Max, Weight: 0.66875 pounds, Manufacturer: Extech

Test-meter.co.uk

AC/DC Magnetic Field Metre with datalogger. Measures up to 3000 mT (DC)/1500 mT (AC). Uniaxial Hall effect sensor, temperature compensation. SD card logging, CSV export. Ideal for power lines, batteries, industrial testing.