What is the required bank balance for a DTV application for a family of four in Thailand?

Hi everyone, has anyone applied for a DTV from California with a spouse and 2 children? I cannot find solid information regarding how much we need to have in our bank account for the 4 of us. My 2 kids are under 10 years old.

I see a few articles and blogs saying we need to show proof we have 500,000 THB for the primary applicant - but I also see some articles stating we will need to show proof that we have 2,000,000 THB for the 4 of us. Eek.

Any help is greatly appreciated!

Thanks so much!