The manual specifies either 10.000g or 20.000g , depending on the sub-model. Look for a sticker on the bottom of the scale. If it says "d=0.001g", you likely need 10g. If "d=0.0001g", you need 20g. Never use a household item; buy a certified calibration weight.
Hold S2 until the display flashes. Use the Up/Down buttons to set the recovery voltage (e.g., 12.5V). Troubleshooting & Maintenance yx-20a manual
This is the voltage level at which the module will disconnect the load to protect the battery. View current setting: Short press Adjust setting: Press and hold until the display flashes. Use to increase the value or to decrease it. 2. Setting the Over-Voltage (Load Start/Restart) Threshold The manual specifies either 10