Electronic Hygrostat EFR012 AC 230V, 40-90 % RH System climate control SIVACON 8MF / 8MR - for climate control in cabinets. The system climate control meets specific requirements. SIVACON 8MR ensures the uninterrupted operation of electrical and electronic devices installed in the cabinet, even under adverse environmental conditions. It prevents the formation of condensate or frost damage and protects against resulting malfunctions. The portfolio ranges from filter fans to cooling and heating devices, as well as thermostats. Alternatively, ventilated cabinets can be used in operating rooms, where system climate control is ensured through natural convection. Siemens offers a comprehensive portfolio of protection, switching, measuring, and monitoring devices, distribution systems, as well as switches and sockets for a safe and efficient electrical infrastructure in buildings and industry.