Licznik ciepła Resideo EW7731M4800 US WMZ QP10 PN25 DN40F M-BUS

This is a heat meter from Resideo, model EW7731M4800 US WMZ. It has a nominal flow rate of QP10, pressure rating PN25, and connection size DN40 with flanged ends (F). Communication is via M-BUS protocol.