Surge protection for two floating signal circuits in the screw-on module with IP67 degree of
protection for sensor heads, connection: M20 x 1.5. Tested in accordance with the following
types of protection in Ex areas: Ex d/Ex tD/Ex ia IIC/Ex iaD. Suitable for use in the fieldbus
system in accordance with the FISCO concept. Can be used in safety-related circuits up to
SIL 3.