Descriptions of M5Stack M121-V11 provided by its distributors.
Family Name = M5Stack / Product Type = Relay Module / Program Memory KB = 8 / Memory Size KB = 32 / Memory Type = Flash / Memory Type = RAM / Interfaces = I²C / Supply Voltage Min. V = 5 / Supply Voltage Max. V = 24 / Length mm = 54 / Width mm = 54 / Height mm = 13 / Weight g = 33