The Transducer 14-SMD Module is included in the package for convenience. It is recommended to set the temperature of the transducers to -40°C~85°C to ensure reliable operation. The transducers are capable of operating well at 2.2V~3.6V supply voltage. 185°C is the maximum operating temperature of the transducers. It is not possible for the transducers to operate at temperatures lower than -40°C.