Siemens WFM542-C000H0 WFM542-C000H0, S55561-F240 WFM542-C000H0 - Impeller type heat meter 0.6 m3/h, with m-bus communication and 2 pulse inputs, mounting length 110 mm
Siemens WFM541-G000H0 WFM541-G000H0, S55561-F239 WFM541-G000H0 - Impeller type heat meter 0.6 m3/h, with m-bus communication and 2 pulse inputs, mounting length 110 mm
Siemens WFN542-G000H0, S55561-F244 Impeller type heating/cooling energy meter 1.5 m3/h, with m-bus communication and 2 pulse inputs, mounting length 110 mm