Thulos TH-HW015 Manual De Instrucciones página 11

BATTERY
This product is operated by 4pcs AA alkaline batteries.
Notes:
1. Don't use new batteries and used batteries together.
2. Don't use batteries of different brands together.
3. Don't use different kinds of batteries together.
4. Damaged, leak, dirty batteries can not be used, please change.
5. Remove battery to prevent possible damage from leakage if not in use
for a long period.