here's the translated wording courtesy of Siam Legal:
https://library.siam-legal.com/thai-law/thai-immigration-act-temporary-stay-in-the-kingdom-sections-34-39/
"Section 38
The housemaster, the owner or the possessor of the residence, or the hotel manager where the alien, receiving permission to stay temporary in the Kingdom has stayed, must notify the competent official of the Immigration Office located in the same area with that hours, dwelling place or hotel, within 24 hours from the time of arrival of the alien concerned. If there is no Immigration Office located in that area, the local police official for that area must be notified.
In case the house, dwelling place, or hotel where the alien has stayed under provision of paragraph 1 is located within the Bangkok area, such notification must be reported to the competent official at the Immigration Division."