IBS-TH3 battery life only 9 days

My IBS-TH3 sensor has been burning thru batteries. The batteries have been brand new but I have to replace them every 9 days

I am having the exact same problem. I thought my batteries must have been a bad batch, purchased a few new ones, same problem.

What type of batteries are using, I find only the best works the longest. The ‘bulk’ purchase ones have no life.

May I know what is the ambient temperature of the IBS-TH3?
Does it also drain quickly if using alkaline batteries?

Duracell Optimum brand new

I use Duracell Optimum and they died in 9 days. I returned this to Amazon