EP240702a: TRT optical upper limits

We observed the field of EP240702a (Chen et al., GCN 36801) using the 0.7-m telescope of the Thai Robotic Telescope (TRT) network, located at Spring Brook Observatory, Australia. Observations started at 14:09:46 UTC on 2024-07-03, i.e., 1.55 day after the EP trigger, and 5 x 360 s frames in R- & I-band were obtained, respectively. No uncatalogued optical transient is detected in the stacked images within the 3-arcmin EP/WXT error circle, down to 5-sigma limiting magnitudes of R ~ 21.8 and I ~ 20.7, calibrated with SkyMapper sources in the field.