Noice, thank you sir. Looks like ESBE ARA662 3-Point SPDT 230v 6NM 120S Actuator is the one: mains operated and 2minute open->close run time, which is the "default" and recommended setting in the FTC5 controller. (MI Page 44: "Set the Running time according to the specifications of the actuator of each mixing valve. It is recommended to set the interval to 2 minutes that is a default value. With the interval set longer, it could take longer to warm up a room.")   ? do update