Siemens WSN821-FBBBF3A | S55561-F276

WSN821-FBBBF3A - Ultrasonic heat/cooling energy meter 1.5 m3/h, mounting length 110 mm, connecting thread 3/4", sensor M10 x 1 mm, 27,5 mm, m-bus communication, 2 pulse inputs, 11 year battery