Voltage calibration. Used to correct minor discrepancies in the display vs. actual voltage. Wiring Overview Input (Power):

Choose between (Undervoltage), P (Overvoltage), C (Charge), or D (Discharge). P1 Lower Limit Sets the voltage floor (e.g., 10.8V for a 12V battery). P2 Upper Limit Sets the voltage ceiling (e.g., 14.4V for charging). P3 Calibration

Most versions are rated for 20A , but for long-term reliability, it’s best to keep your load under 15A . 2. Core Functions: P0 & P1 The module operates based on two primary set points:

: Charging Mode (Relay closes when low) / 1 : Discharging Mode (Relay closes when high) P1 Lower Limit The voltage where the relay switches state (e.g., 10.5V). P2 Upper Limit The voltage where the relay switches state (e.g., 14.4V). P3 Timer (Optional) Sets a delay in minutes before the relay kicks in. 4. Calibration If the voltage on the screen doesn't match your multimeter: Hold the SET and + buttons simultaneously.

Main power input (6–40V DC) to power the module.

Some boards drift in timing accuracy. To recalibrate:

This report is based on a general understanding of the XH-M608 manual and might not cover all specific details, features, or updates related to the device. Users are advised to refer to the most current and specific manual provided with their XH-M608 device for the most accurate and detailed information.