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Eberspacher Espar Hydronic Smart IPCU Self Learning Blower Fan Relay Smart (self-learning) Intelligent Programmable Control Unit Genuine Eberspacher warranted Hydronic water heater device Eberspacher D5E Hydronic, Eberspacher D4E Hydronic, Eberspacher B5E & B4E Hydronic Heaters Can be used as an alternative to Eberspacher Easy Fan Technical information: Relay Designation: Smart Itelligent Programmable Control Unit (Smart IPCU) Nominal voltage: 12 V Test voltage: 13,5 V Test temperature: 23 °C ± 5 K Compliance with tolerances for: 10,5 - 14,5 V Reliability: 9 - 16 V U (max) for 1 hour: 17,5 V U (max) for 1 minute: 27 V Max. Operating Temperature: 85 °C Storage temperature: 40 °C - 100 °C Dimensions (LxWxH): 52 x 30 x 30 mm Plug Contacts: Flat plug DIN 46244 Material: PA6, black Protection class according to DIN 40050-9: IP42