Xh-m608 Manual ((free)) Review

Relay stays closed only when the voltage is between the lower (P1) and upper (P2) limits.

The relay does not function; it only displays the current voltage. Xh-m608 Manual

The module uses a menu system (P0 to P3) to define its behavior. Use the button to navigate and the + / – buttons to adjust values. P0: Operating Mode Selection Relay stays closed only when the voltage is

When the battery is low, the relay closes to allow the charger to work. When full, it opens to prevent overcharging. Xh-m608 Manual

Relay closes when voltage ≤ P1 (lower limit) and opens when voltage ≥ P2 (upper limit).