The OPG01 is manufactured by Besta. It is a limit value switch that is made from stainless steel. The device has a glass tip, cable or plug output, for detection purposes of limit levels of liquid media.It supports supply voltage from 12 to 32 V DC. It can be mounted in any direction. The housing is stainless steel 1.4305, optional also in stainless steel 1.4571.