1) Hold Function: Saves measurements for convenient reading and recording.
2) Auto-off function: The meter shuts off automatically after 5 minutes of non-use to conserve batteries.
3) Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm.
4) Range: 0-999 ppm
5) Accuracy: reading+-2% or +-2ppm
6) Battery: 2×1.5V (LR44 Button cell)
7) Display: Large and easy-to-read LCD screen
8) Size:160x35x12mm
