The versatile radio add-on module with detection of backflow and magnetic interference.
The versatile add-on radio module enables the retrofitting of mechanical water meters with a wireless M-Bus 868 MHz radio interface for wireless remote data transmission. The add-on radio module is compatible with all meters with Modularis interface and thus offers the greatest possible flexibility for every application. Thanks to the IP68 protection class, the add-on radio module is suitable for any installation situation. The battery life of 12+1 years also makes use possible over several calibration periods.
The attachment detection with automatic radio activation enables easy installation and direct commissioning of the add-on radio module. Thanks to AES encryption with OMS 3 Mode 5 or optionally with OMS 4 Mode 7, your measurement data is transmitted securely. The optical interface additionally enables a detailed readout of all meter data as well as the individual parameterization of the radio settings according to your needs.
Choose the Engelmann wireless add-on module and benefit from secure and reliable transmission of your meter data.
| Parameter | Specification |
|---|---|
| Temperature range (medium) | 0 – 105 °C |
| Ambient temperature (storage and in the field) | 1 – 55 °C |
| Minimum transport temperature | -20 °C (for up to 7 days) |
| Maximum transport temperature | 70 °C (for up to 24 hours) |
| Data storage | Read-only memory; stored once daily |
| Tampering detection | Removal; magnetic |
| Interfaces | Wireless M-Bus and optical interface (M-Bus protocol) |
| Protection class | IP68 |
| Billing date options | Annually variable (days 1–31, except 29.02.) Monthly variable (days 1–28) |
| Stored monthly values | 72 monthly values |
| Power supply | 3 V; lithium battery |
| Battery capacity (designed lifetime) | 12 years (operation) + 1 year (storage) |
| Parameter | Specification |
|---|---|
| Radio protocols | “Short telegram” compliant with OMS (AMR): serial number (FAW or water meter), current value, hint flag, serial number FAW.
“Long telegram” for walk-by readout: serial number (FAW or water meter), current value, billing (due) date, billing date value, 15 monthly values, hint flag, serial number FAW. |
| Transmission power | 13 dBm |
| Transmission frequency | 868 MHz |
| Radio mode | Adjustable: C1, T1, S1 |
| Encryption | AES 128 |
| Encryption mode | Mode 5 / Mode 7 |
| Start date of radio transmission | Annually variable (except 29.02.) |
| Transmission interval | 2 – 240 min |
| Transmission times (UTC+1) | 12:00 a.m. – 12:00 p.m. |
| Transmission days | Monday – Sunday |
| Transmission weeks | Weeks 1 – 4 of each month |
| Transmission months | January – December |
