The TOPR/RX/RW/RE/RH series models are equipped with a rechargeable battery soldered onto the main board. This battery is used solely for the internal clock.
If the battery fails, the device’s clock will reset to 2000-01-01 on the menu screen.
In such cases, please contact our customer service center for repair support.

 

* Please note that battery life may be shortened depending on the installation environment. In particular, environments with corrosive gases may lead to more frequent battery-related issues.