The Innotas Modularis water meter attachment consists of a pulse sensor that counts pulses for calculating the water flow volume. It can be attached to water meters with Modularis metering shaft (E. Wehrle GmbH, Wasser-Geräte GmbH, Meibes Systemtechnik GmbH, Maddalena GmbH, QUNDIS and others), ingle-jet and multi-jet dry dial water meters, annular piston, and measuring capsule water meters.