{"NAME":"Ruihai SB50","GPIO":[0,0,0,0,416,419,0,0,417,0,418,0,0,0],"FLAG":0,"BASE":18}

Appears to be identical to the Teckin SB50 v3. Tuya-Convert failed due to the firmware version being so recent. Serial flash was needed. Lid was very easy to remove without damage using a plastic spudger, and the upper PCB was popped out with the same. Only some forgiving “hot glue” type adhesive was used which made things easy. Photos: https://photos.app.goo.gl/i3odWY6tWAwVts9s6