SHARP OEM QSW-MA051WRE0 SEC. INTERLOCK/DOOR SENSE/DAMPER SWITCH Works with the following models: Sharp R21HC, Sharp R21HT, Sharp R21HTF, Sharp R21HV, Sharp R-21JC Sharp R-21JCA, Sharp R21JCAF, Sharp R-21JV, Sharp R21JVF, Sharp R22ES, Sharp R22ET, Sharp R22ETA