Sets the under-voltage threshold:

: The relay never activates, making the module function exclusively as a standalone digital voltmeter. Settings for P1, P2, and P3 are ignored.

The board is often paired with high-current MOSFETs (like the IRF3205 or similar) and a separate power supply. Without a proper manual, most users fail to calibrate the timing correctly, resulting in burnt nickel strips or weak welds.

Press and hold the button for 3 seconds until the screen flashes.

In conclusion, the XH-M608 manual is a vital component of the product itself, serving as the bridge between the user’s intent and the device's capability. It provides the necessary constraints for safety, the logic for interface navigation, and the technical details for physical integration. While the circuit board provides the hardware, the manual provides the knowledge. For any user looking to harness the full potential of this voltage control switch, the manual is not an optional accessory but an absolute necessity, proving that in the world of electronics, knowledge is indeed power.

output voltage; it breaks or completes a circuit for an external charger or load. wiring diagram

Once on the desired menu, press again to view or change its internal parameter value. Modify the parameter value using ADD (+) or DEC (-) .

Displays the current voltage at the input terminals without triggering the relay. P (Voltage Protection):

3 Momentary tactile micro-switches labeled SET , ADD (+) , and DEC (-) Hardware Interface & Wiring Topologies

Behavior: The relay closes and conducts charge only when the battery drops to the lower limit, opening immediately when the battery reaches the defined upper safety limit.