DR-09 Electric thermal actuator Central air conditioner, radiator control or floor heating control. DR-09 Electric thermal actuatorCentral air conditioner, radiator control or floor heating control.Germany techonlogy, Normally closed, but manual openable for initial installation.U: 230V 50-60HZH:3.5mmP:3WM30*1.5T:<4.5 minF:90-120NI max: 150mA DR-09 Electric thermal actuator