Our radio systems
The all-rounders for modular radio M-Bus and pulse systems from all well-known manufacturers of radio modules
System components

Radio
Add-on modules for radio-ready ECO water meters. The radio add-on module records and processes the counting pulses from mechanical water meters with radio preparation and transmits the data to a readout system. The radio add-on module is equipped with an optical interface for parameterisation.

Impulse
Optical pulse generator with return flow detection for “ECO” water meters

M-Bus
Optical scanning with return flow detection for “ECO” water meters, remote reading of water meter data via M-Bus
Things to know
MID / CE Declaration of Conformity
Things to know
Guidelines and regulations
Mess- und Eichgesetz (MessEG) – Law on the placing on the market and making available of measuring instruments, their use and calibration, and on prepackaged goods
Mess und Eichverordnung (MessEV) – Regulation on the placing on the market and making available of measuring instruments, as well as on their use and calibration
TrinkwV Trinkwasserverordnung – Regulation on the quality of water intended for human consumption
Metall-Bewertungsgrundlage for metallic materials in contact with drinking water
Messgeräte Richtlinie 2004/22 EG (MID)
REACH-Verordnung (EG) Nr. 1907/2006
EED-Richtlinie 2012/27/EU for energy efficiency
Things to know
Calibration requirement for water meters
With regard to the mandatory calibration of water meters, the calibration authority provides the following information to the owners of such measuring devices:
1. Calibration requirement
According to the German Measurement and Calibration Act (MessEG), water and heat meters must be calibrated if they are used in commercial transactions*.
*This also applies to the billing of energy or water using meters between homeowners’ associations and individual apartment owners, tenants and landlords, or between allotment garden associations and their members.
2. Metrology marking
New measuring instruments are marked by the manufacturer through so-called conformity assessment procedures. For these instruments, the calibration period begins upon being placed on the market; they are equivalent to calibrated measuring instruments for the duration of the respective calibration period and do not require recalibration during this period.
3. Calibration periods for measuring instruments
Cold and hot water for 6 years
4. Obligation to report (§ 32 Abs. 1 and 2 MessEG)
Anyone using new or renewed measuring instruments must report them to the competent authority under state law no later than six weeks after commissioning. This obligation does not apply to auxiliary equipment and dispensing gauges. Further details can be found in an information sheet at www.agme.de or www.eichamt.de. The report for the new or renewed measuring instrument can also be submitted at www.eichamt.de.
5. Administrative offenses
Anyone who negligently or intentionally violates calibration regulations when using measuring instruments or measured values is committing an administrative offense. This offense can be punished with a fine of up to €50,000.
6. Legal basis
The legal basis for these guidelines can be found in the following laws and regulations:
1) Measurement and calibration law (MessEG) in the currently valid version
2) Directive 2004/22/EC of the European Parliament and of the Council of 31 March 2004 on measuring instruments
3) Directive 2014/32/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of measuring instruments
4) Measurement and Calibration Ordinance (MessEV) in its currently valid version
7. Information
Further information can be found at www.eichamt.de
| Eichjahr | Ausbaujahr |
|---|---|
| Kalt- und Warmwasser | |
| 2019 | 2025 |
| 2020 | 2026 |
| 2021 | 2027 |
| 2022 | 2028 |
| 2023 | 2029 |
| 2024 | 2030 |
| 2025 | 2031 |
| 2026 | 2032 |
Things to know
Calibration fees / conformity fees
In accordance with the German Metering Fees Ordinance (MessEGebV) of April 30, 2019, the corresponding fee schedule from Annex II to Article 2 will enter into force on January 1, 2021.
The fees are payable per meter and are not subject to any discounts, rebates, or bonuses.
Measuring devices for measuring the volume of flowing cold and warm water
| QN m³/h (EWG) | Q3 m³/h (MID) | Preis € bisher | Preis € ab 01.01.2026 |
|---|---|---|---|
| 1,5 - 6 | 2,5 - 10 | 9,90 | 14,40 |
| 10 | 16 | 13,90 | 20,10 |
| 15 | 25 | 66,50 | 93,20 |
Diagnostics checks
| QN m³/h (EWG) | Q3 m³/h (MID) | Preis € bisher | Preis € ab 01.01.2026 |
|---|---|---|---|
| bis 10 | bis 16 | 95,50 | 143,30 |
| 15 - 100 | 25 - 160 | 303,10 | 416,60 |
| über 100 | über 160 | auf Anfrage | auf Anfrage |
Woltman counter
| QN m³/h (EWG) | Q3 m³/h (MID) | Preis € bisher | Preis € ab 01.01.2026 |
|---|---|---|---|
| 15 - 40 | 25 - 63 | 66,50 | 93,20 |
| 60 - 100 | 100 - 160 | 151,50 | 188,50 |
| 150 | 250 | 174,10 | 217,00 |
| 250 | 400 | 241,60 | 300,00 |
Heat meter
| QN m³/h (EWG) | DN | Preis € bisher | Preis € ab 01.01.2026 |
|---|---|---|---|
| 0,6 - 2,5 | 15 - 25 | 41,70 | 57,90 |
Things to know
Conformity assessment – the procedure
New regulations effective from April 1, 2019
Your MID-compliant water and heat meters currently in stock will be processed as follows upon receipt:
- Acceptance is only possible from February 1st to February 28th; returns outside this period will not be processed.
- The meter must be a water appliance product in its original packaging.
- Only meters from the previous year will be accepted.
- Shipments that do not meet the requirements under point 2 and/or contain third-party products will not be processed and will be returned to the sender.
- Sending items in advance is free of charge; returns are at your expense.
- The following costs apply per meter:
- Fee for conformity assessment
- Processing fee of €1.00 per meter
- Return shipping costs
You will receive new, unused goods as a replacement for your returned item.
Note: Parameterized and electronic water meters are excluded from this procedure.
We are currently developing a more user-friendly solution for next year.
Heat meters and multi-jet dry-running meters are considered purchased products and are forwarded to the supplier for national calibration.
Things to know
Read the water meter
Example of how to read a water meter:

The water meter shown displays 5301 m³ and 615.2 liters. The four red liter hands are read clockwise, in the following order: 6 > 1 > 5 > 2.
As soon as the red 100-liter pointer (labeled x 0.1) reaches zero again, 1000 liters (i.e. 1 m³) have been consumed, and the roller counter above the red pointers counts one cubic meter further to 5302 m³.
Things to know
Water appliance type description
| Kapitel | Kurzbezeichnung | Ausführliche Bezeichnung |
|---|---|---|
| Hauswasserzähler | MNR | Mehrstrahl-Nassläufer-Rollenzählwerk |
| MNRS | Mehrstrahl-Nassläufer-Rollenzählwerk-Steigrohr | |
| MNRF | Mehrstrahl-Nassläufer-Rollenzählwerk-Fallrohr | |
| MTW | Mehrstrahl-Trockenläufer-Waagerecht | |
| MTS | Mehrstrahl-Trockenläufer-Steigrohr | |
| MTF | Mehrstrahl-Trockenläufer-Fallrohr | |
| RKK | Reed-Kontakt-Kabel | |
| MT-E | Mehrstrahl-Trockenläufer Elektronisch | |
| Wohnungswasserzähler | ETW | Einstrahl-Trockenläufer-Wohnungszähler |
| ETW-E | Einstrahl-Trockenläufer-Wohnungszähler Elektronisch | |
| ECO | kennzeichnet alle Zähler mit Funkvorbereitung durch Modulschacht | |
| WTZ | WaschTischZähler | |
| WTZ-E | WaschTischZähler Elektronisch | |
| ZHZ | ZapfHahnZähler | |
| ZHZ-E | ZapfHahnZähler Elektronisch | |
| BWZ | BadeWannenZähler | |
| BWZ-E | BadeWannenZähler Elektronisch | |
| UPZ | UnterPutzZähler | |
| UP | UnterPutz | |
| UP-E | UnterPutz Elektronisch | |
| UP-E-S | UnterPutz Elektronisch SHORT-Version mit kurzer Baulänge | |
| VTZ | VenTilZähler | |
| VTZ-E | VenTilZähler | |
| Unimeter | Unimeter | Austauschprogramm Trockenläufer für modulare Funk-, M-Bus- und Impulssysteme |
| Wärmezähler | VoluMess | Typenbezeichnung |
| Komfort | mit abnehmbaren Zählwerk | |
| Koaxial | 2" | |
| EBS | EinBauSatz | |
| Woltmanzähler | WPX | Woltman-parallele Rohrachse-X |
| RKK-WPX | Reed-Kontakt-Kabel zu Woltman-parallele Rohrachse-X | |
| Montageblock | WG-TEC 3000 | Wasser-Geräte – Typenbezeichnung |
| DVGW | Deutscher Verein für Gas und Wasser | |
| VT OT | Ventil-Aufputzset | |
| Montagezubehör | Adapter SW 30 | Adapter Schlüsselweite 30 |
| Stecknuss SW 30 | Stecknuss Schlüsselweite 30 | |
| Einbaubügel | WZ-Bügel | Wasser-Zählereinbaubügel |
Things to know
Marking of water meter housings according to DVGW worksheet W421
The entire brass water meter range from Wasser-Geräte meets all the requirements of the new DVGW (German Technical and Scientific Association for Gas and Water) regulations for the Drinking Water Ordinance, DIN 50930-6. All plastic components that come into contact with drinking water have a test certificate in accordance with the guideline for the hygienic assessment of organic materials in contact with drinking water (KTW guideline) and the DVGW regulations (W270), which confirm the suitability of the materials from a microbiological perspective.
All materials we use therefore comply with the requirements stipulated in Section 17 of the Drinking Water Ordinance. According to DVGW Worksheet W421, water meter housings must be marked externally with the manufacturer’s mark, the year of manufacture, and the material number. Additionally, the metrological units (measuring insert) must be marked on the surface in accordance with DIN EN 14154-2 or DIN EN ISO 4064-4. The markings on the corresponding connection interfaces (housing) must be visible either on the inside or the outside. Water-equipment implements these regulations and standards as shown alongside:
Things to know
Transport, storage and installation of water meters
To ensure the safety of our products outside our area of responsibility, we recommend the following measures:
- Store and transport meters exclusively in their original packaging.
- Remove thread protection caps only before installation.
- Store in a dry, frost-free environment (max. 20°C ambient temperature).
- Do not store in service vehicles or production areas. Install as soon as possible after receiving the goods.
- Do not subject the meter to strong shocks or vibrations during transport to the customer.
- The meter seal must not be broken during transport or installation.
- A damaged seal results in the immediate loss of warranty claims and conformity.
We cannot accept liability for transport and storage outside our area of responsibility, nor for the handling of the products during installation.
We confirm that, provided the above-mentioned measures are followed, the meters manufactured and tested in our facility can be classified as microbiologically safe upon delivery.
Please also note the following information:
Things to know
Frost damage to water meter
Winter temperatures frequently cause frost damage to water pipes in and around buildings. Here we explain how to protect pipes and water meters from freezing and what to do if damage does occur.
Just a few precautions are enough to avoid such annoying damage:
Noch nicht installierte Wasserzähler:
Wasserzähler (insbesondere vom Typ Mehrstrahl-Hauswasserzähler als Nassläufer MNR) werden im Werk vor ihrer Auslieferung überprüft und enthalten daher Restmengen von Prüfwasser. Diese Reste können während der Beförderung einfrieren, wenn die Außentemperaturen bzw. die Temperaturen im Transportfahrzeug unter den Gefrierpunkt fallen. Das muss aber nicht zu einem Schaden am Wasserzähler führen, wenn Sie unsere folgenden Tipps berücksichtigen:
- Thaw water meters that arrive at your location in freezing temperatures slowly in a frost-free room. Under no circumstances should water meters be heated above 40°C, as this would damage the internal technology!
- Check if a water meter intended for installation during the frost period is functioning by gently blowing into it (building up air pressure on the inlet side) – this should set the starting star wheel in motion. If this does not happen, the meter may be damaged and should not be installed.
Pipes and already installed water meters:
- Prepare pipes leading outside or into unheated rooms for frost in good time by shutting them off and draining them completely before the onset of frost (close shut-off valve, open tap, keep drain valve open).
- Keep doors to the outside and basement windows with water pipes closed at all times, and replace any broken panes to prevent cold air or drafts from entering.
- Insulate pipes that are particularly vulnerable to freezing using common insulating materials. Pay special attention to pipes in basements. Ensure that the insulating material remains dry at all times.
- Cover water meter pits located outside the building securely and provide additional frost protection inside the pit with insulation material. Shut-off valves and meters should remain accessible, so ensure the insulation has a suitable opening that can be easily opened and closed.
- Even if you plan to leave a building unused for an extended period, never turn the heating off completely. Instead, set the thermostatic radiator valves to at least the “frost protection” setting (star symbol *). If the heating system is not in operation during this time, you must drain all water pipes in the house to prevent damage from freezing. To do this, close the main water valve and open all taps.
- If your water pipes do happen to freeze, be careful when attempting to thaw them: Use hot water or hot towels, heating mats, or fan heaters, but never open flames such as blowtorches or candles – the associated fire risk should not be underestimated. As a precaution, consult a plumber, especially if you are unsure whether the freezing has already caused any cracks in the pipes. If so, these damages should be repaired by a professional.
Legal page:
- Repairs to water service connections and water meters are the responsibility of the water supply companies.
- The homeowner or apartment owner is responsible for all pipes located after the water service connection or water meter. They are also obligated to take appropriate measures to protect the water service connection and meter from freezing and other damage.
- Should damage occur, the property owner may be liable for the repair costs.
In case of damage to your water connection or water meter, no time should be wasted: Report it immediately to your responsible water supply company!
Things to know
Manufacturer and interface identification
| Schnittstellenkennzeichnung | Gewinde | allgemeine Bezeichnung |
|---|---|---|
| WGU | M66x1,25 | Wasser-Geräte |
| IST | G2B | Koax |
| TE1 | M62x2 | Techem |
| MET | M64x2 | Metrona 307/2 |
| MOE | M65x2 | ABB-MOE |
| MOC | M65x2 | ABB-MOC |
| MUK | G 2 1/4 | PolluMuk |
| PCC | M60x2 | Wärmezähler Sensus |
| Y01 | M60x3 | |
| A34 | M77x1,5 6H | Allmess / Bodenprägung 3/4" |
| A1 | M77x1,5 6H | Allmess Qn 2,5 Bodenprägung 1" |
| MB3 | M76x1,5 | MB3 |
| MB2 | M80x1,5 | MB2 |
| M7L | M58x1,5 | Micro |
| DM1 | M60x2 | Deltamess |
| WE1 | M78x1,5 | Wehrle |
| HT1 | M45x1,5 | Brunata kleine Hydraulik |
Things to know
Additional information
Pricing:
All previous gross price lists are hereby invalidated. For calibrated or conformity-eligible water meters, prices are subject to the statutory calibration fee/conformity charge.
Value Added Tax:
All prices quoted are ex-works, plus the statutory value added tax applicable on the date of invoicing.
Conformity Fee / Calibration Fees:
The fees valid on the day of delivery apply. Conformity fees and calibration fees are statutory charges and therefore not eligible for discounts, rebates, or bonuses. The fees are subject to change according to the currently valid fee schedule.
Delivery Terms:
For orders over €1,000, we offer free shipping and packaging. Consolidated shipments are not possible! We do NOT charge a minimum order surcharge. Our terms and conditions of sale and delivery apply.
Return Costs:
Returns of non-standard or defective goods are not possible. For undamaged goods in their original packaging, we charge a 20% processing fee; a credit note can only be issued if you provide our invoice number. Please send returns postage paid; collect shipments will not be accepted. Postage will be refunded for justified returns.
Inspection Fees:
Generally, for returned meters that are found to be faultless, an inspection fee of €50 is charged for cold and hot water meters, including the inspection report and documentation.
Leasing Offers:
If you prefer not to tie up capital by purchasing your own water meters, we would be happy to advise you.


