Basically, it is a type of RF Transmitter that is available in a Module package.For RF Transmitter operation, 60°C°C is the maximum operating temperature.For reliability, it must work at a minimum temperature of -20°C degrees Celsius.
STM330 Features
Module package Minimum of -20°C°C
STM330 Applications
There are a lot of EnOcean STM330 RF Transmitter applications.