Pulse Readers | Sensors

Holosys Wireless M-Bus OMS HydroPulsar HP

  • Wireless M-Bus in accordance with EN 13757-4
  • Operating frequency 868 MHz
  • Direct-mount on Sensus water meters
  • Inductive sensor for meter reading
  • Meter readout on due date option

Holosys Wireless M-Bus OMS HydroPulsar HP is a compact radio module for direct-mount on Sensus mechanical water meters.


Built-in inductive sensor ensures accurate meter readings and compact design makes installation and maintenance easy. Wireless M-Bus OMS standard ensures compatibility with a wide range of meter reading equipment

Key Features

  • Compact design: direct mounting on Sensus water meters
  • Inductive sensor for meter reading
  • Battery lifetime: Up to 10 years
  • Range: Up to 800 meters
  • Protection type: IP68
  • Operating temperature: -20°C ... 80°C
  • Wireless M-Bus OMS radio packets periodical sending for meter readout data transfer
  • Radio telegrams adjustable sending interval
  • Radio telegram AES-128 encryption in order to protect data content
  • Configurable AES-128 password
  • Pseudorandom radio telegrams sending in order to avoid synchronous collisions
  • Battery powered radio repeater synchronization
  • Embedded Real-Time Clock (RTC)
  • Stored counter number on a due date sending
  • Stored manipulation alarm information (Tamper) sending
  • Low battery alarm sending
  • Remaining battery life time sending
  • Revers flow alarm sending
  • Adjusted flow information depending on flow direction sending
  • User configurable counting impulses vs. value increment factor
  • Device configuration using the AES-128-protected radio channel

Supported water meter types

Water meters

Sensus 420, Sensus 420PC, Sensus 405S, Sensus 620, Sensus 620C, Sensus 120, Sensus 120C, Sensus 820

Radio Interface


868 MHz SRD band

Antenna type


Data transmission rate

100 Kchips


EN 13757-4

General data

Power supply

Integrated battery

Battery life time (25°C): ~10 years (depending on the configuration)


Material: Thermoplastic

Dimensions (w x h x l): 58 x 44 x 69 mm

Color: Light gray

Protection type: IP68

Mounting: Bolts on the water meter

Operating temperature range

-20°C ...+80°C


~ 110 g