TUYA, Control Unit, models:

TYBT4L	User Manual
TYWE3S	Communications Instructions
TYWRD1S	Product Manual
TYZS11	Manual
TYZS3	Manual
WBR1D-IPEX	Manual
WBR3L	Datasheet
WRD2L	Product Manual
ZS2S	Product Manual
ZS3L	Product Manual