- What does the SD700 actually measure?
- Barometric pressure, temperature and relative humidity. It records all three at the interval you set and stores them on an SD card.
- How is it different from a home weather station?
- It is a portable logger, not a display station. It has no wireless outdoor sensor and no forecast, but it keeps a timestamped record you can analyze on a computer.
- How long can it log unattended?
- Run time depends on the logging interval and battery condition. A longer interval stretches both the battery life and the SD card capacity.
- Does it need special software?
- No. Data is written to the SD card in a file you can open on a PC. You will need a card reader or SD slot on your computer.
- What batteries does it use?
- AAA batteries. That makes replacements easy to find, but keep spares on hand for long logging runs.
- Can it be used outdoors?
- It is intended for indoor use. For outdoor pressure and humidity records, place it in a sheltered spot rather than exposing it to rain.
- Where is the Extech SD700 Barometric Pressure Datalogger cheapest?
- At Msc Industrial Supply, for $401.78, as of our latest check.