What is the battery of Belcon non-contact electronic thermometer?

First, check whether the battery is installed backwards. Maybe the battery is installed backwards.

Second, check whether there is any problem with the contact of the power supply and the contact of the battery cover to see if the battery has electricity. If there is no power, please replace the battery.

Thirdly, if the machine is still not displayed after the above steps, you can send it to the maintenance address: No.38 West Road, Huanzhen Town, Dagang Town, Nansha District, Guangzhou (please attach your address, name and contact number in the form of a note when sending the product), and the recipient should write: After-sales Department.

There is a phone call under Baidu in official website. The answer here is easy to be said by Baidu to be in violation of regulations, and it has already started to cramp.