The remote control contains a lithium battery type CR2032, with a voltage of 3 V. If the supply voltage is within the normal range, then each time you press any button on the remote control, the indicator built into the key lights up with a short flash. If, when pressing any button on the remote control, the indicator lights up with two short flashes or does not light up, the battery should be replaced. To do this, do the following:
using a flat screwdriver, separate the halves of the case;