Usually next to the battery. The switch of my weight electronic scale can only be seen by opening the battery cover. The switch position of different electronic scales may be different. Look carefully next to the battery.

Although not using the electronic scale for a long time will automatically turn off the power supply, it will also consume the battery power. If the battery does not consume power, you can only turn off the hardware power switch manually. After the power is automatically turned off, the electronic scale can be automatically turned on by touching it.