753 and 753R does not have an IP rating. They are designed for indoor use. 753 is a 2-wire (does not require Neutral connection), and can only switch a
limited range of load types. 753R is a 3-wire device (requires Neutral connection to operate) capable of switching a wide range of load types.
For further information, please visit https://updates.clipsal.com/ClipsalOnline/Files/Brochures/W0001475.pdf