How do I change the readings from standard to metric on a DT1H, H22PX, or H22FX Handheld Sonar? Follow

H22PX & H22FX:

Simply remove the battery cap and battery. Between the two battery prongs there is a small black switch, slide the switch to the left for standard and to the right for metric.

DT1H:

1. Turn the unit on by sliding the switch towards the battery compartment and releasing.
2. Slide the switch towards the battery compartment and hold for 5 seconds.
3. The current units of measure will blink, release the switch.
4. Pull and release the switch to change between the settings (FT/F, M/C)
5. The unit will automatically exit the units of measure setting and return to the last mode (depth or temp) if the switch is not moved for 10 seconds.