Sequential Control Device USS121P
The USS121P is functional equivalent of the MK1+P module. Among others it is intended to control a single-stage gas burner and a boiler feed pump, enclosing only the pump, the burner with the pump and only the burner. It has two relays with SPSDT contacts.
This device has been replaced by the MS121 module and is only available while stocks last. Please contact us before ordering.
Price: 45 €
Declaration of conformity: (194kB)