A possible cross for relay 833H-1A-C-12VDC would be Z2352-ND. Please review datasheet specifications before ordering to ensure it will work for your specific application as there may be some differences.
Original 833H-1A-C-12VDC
Source - https://www.mouser.com/datasheet/2/378/20119191320287145-4912.pdf
Suggested Replacement Z2352-ND
Source - https://omronfs.omron.com/en_US/ecb/products/pdf/en-g5le.pdf