DIEHL Metering HRL-C-G3 LoRaWAN Radio Module for DIEHL Water Meters (EU868)

DIEHL Metering HRL-C-G3 LoRaWAN Radio Module for DIEHL Water Meters (EU868)

• Compact radio transmitter for mechanical water meter
• Designed for LoRaWAN® fixed networks (operated or private)
• Main Functions: Midnight index, Hourly consumption, Return flow volume,
Minimum and maximum flow values
• Main Alarms: Fraud, Battery, Blocked meter, temperature, Backflow, Overflow, Leak
• Insensitive to magnetic fraud
• Battery lifetime up to 15 years
• IP 68

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Diehl Metering HRL-c-G3: Remote Water Meter Reading with LoRaWAN

The Diehl Metering HRL-c-G3 is a radio module designed to transform standard mechanical water meters into smart meters with remote reading capabilities. This compact device utilizes LoRaWAN technology for:

  • Long-range communication: Transmit water consumption data over extended distances, ideal for situations where meters are buried or difficult to access manually.
  • Low-power operation: Minimize battery consumption, enabling extended operation on a single battery for up to 15 years (depending on usage).

Designed for Compatibility:

  • Easy installation: The HRL-c-G3 easily clips onto existing Diehl Metering meters equipped with a grey or red ring in the inductive range (Ha+Ti or Ti).
  • Magnetic tamper detection: Built-in inductive sensor ensures data integrity by being insensitive to magnetic tampering attempts.
  • Flexibility: While primarily designed for Diehl meters, it can also be used with any pulse-emitting meter when combined with Diehl's IZAR BE Pulse interface.

Data Transmission and Management:

  • Fixed network data collection: The HRL-c-G3 transmits data at pre-determined intervals (typically every 12 hours) to a subscribed LoRaWAN network.
  • Remote access: Access water consumption data and manage settings remotely via a LoRaWAN gateway and cloud platform (IZAR@NET 2 or network operator interface).


  • Smart water management: Gain insights into water usage patterns for efficient water consumption and cost reduction.
  • Billing automation: Facilitate accurate and timely water billing for both utilities and consumers.
  • Leak detection: Monitor for unusual consumption patterns that might indicate potential leaks.
  • Improved infrastructure management: Remotely monitor water meter performance and optimize maintenance schedules.


The Diehl Metering HRL-c-G3 offers a cost-effective and reliable solution for remotely reading water meter data. Its long-range communication, low-power operation, and compatibility with existing infrastructure make it a valuable tool for utilities and property managers seeking to improve water management practices.

Product Downloads

Technical Specifications
Fixed Network Radio Protocol LoRaWAN® Class A
Walk-by Radio Protocol not available
Frequency 863 ... 868 MHz
Encryption Individual key - AES-128/CTR
Transmission power 25 mW (14 dBm)
Transmission mode Bi-directional
Radio range Several km (LoRaWAN®) depending on network coverage
Standards EN 300220 | RED 2014/53/EU | RoHS 2011/65/EU | EN 60950 | EN 62311:2008 | EN 62479:2010 | EN 301489 | EN 50581:2012
Certification LoRa Alliance®, Inc - According specification v1.0.1
Power supply Lithium battery 3.6 V - Li/SOCl2
Battery lifetime Up to 15 years*
Ambient Conditions
Ambient operating temperature -10 ... +55 oC
Storage temperature -20 ... +65 oC
Ambient humidity 0 ... 100 %
Degree of protection IP 68
Local interface Bi-directional radio
Functions Midnight index | Hourly consumption | Backflow volume | Minimum and maximum flow values
Alarms management Fraud | Low battery | Meter stopped | Temperature | Backflow | Overflow | Leak
Meters Diehl Metering Ha+Ti or Ti inductive modular range . Pulse weight DN15 to DN40 (1 liter) | Pulse weight DN50 to DN125 (10 liters) | Pulse weight DN150 to DN300 (100 liters) | CORONA MWi (D3/D4) DN15 to DN20(25) (1 Liter) DN25 to 50 (10 Liter)
Length 110 mm
Height 59 mm
Width 85 mm
Total mass 214.2 g
EEE mass (2012/19/UE) 188.2 g
Battery & accumulator mass (2006/66/CE) 26 g
Lithium mass 0.9 g

Shipping Policy

We provide worldwide shipping using reliable tracked
shipping services.

Local Shipments within Cyprus

Shipments in Cyprus are performed usually with ACS Courrier
or AKIS Express. In some cases, we might deliver the products ourselves. A pick-up
option from our locations is also available.

International Shipments

International shipments are performed using Express Airway
Shipping Services. We are currently shipping orders with TNT Express and FedEX.
As soon as your shipment is dispatched you will receive the shipment confirmation
including the shipment tracking number which you can use to track your order
from the shipment provider website.

We dispatch orders within 1-3 workdays after the day of the
order placement. 

General Return Policy

We have a 30-day return policy, which means you have 30 days
after receiving your item to request a return.

To be eligible for a return, your item must be in the same
condition that you received it, unworn or unused, with tags, and in its
original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at sales@cyric.eu. If
your return is accepted, we’ll send you a return shipping label, as well as
instructions on how and where to send your package. Items sent back to us
without first requesting a return will not be accepted.

For any further information, help and support regarding the
shipping and/or return process you can contact us at:

  • Email: sales@cyric.eu
  • Telephone: +357 22 282828