Thermoblock 2001, 120V, 1200W. Hot water thermoblock that supplies hot water to the brew group and dispensing regular hot water from the front nozzle. Also, cause of ERROR 5 in below mentioned Jura espresso machines. The L-Connector is used to connect the PTFE tubes to the thermoblock. Please note this is a brand new unused boiler. We do not sell used or refurbsihed parts. Jura part number 10394.