Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Solar Sensor: Testing and Inspection

Checking (Automatic Temperature Control)

- In bright place, measure ampere between pin 1 and battery (-) terminal.
- In dark place, measure ampere between pin 2 and battery (+) terminal.
- Check the ampere in the bright place is higher than in the dark.

NOTE: The voltage is same as the ampere.