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DN15 / 20 / 25mm LoRaWAN Smart Water Meter 165 X 85 X 111mm

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DN15 / 20 / 25mm LoRaWAN Smart Water Meter 165 X 85 X 111mm

DN15 / 20 / 25mm LoRaWAN Smart Water Meter 165 X 85 X 111mm
DN15 / 20 / 25mm LoRaWAN Smart Water Meter 165 X 85 X 111mm
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Large Image :  DN15 / 20 / 25mm LoRaWAN Smart Water Meter 165 X 85 X 111mm

Product Details:
Place of Origin: China
Brand Name: Radarking
Certification: CE, CCC, ISO9001, ISO14001, ISO4064
Model Number: SKZS
Payment & Shipping Terms:
Minimum Order Quantity: 100 pcs
Price: Negotiate
Packaging Details: Standard Packing in Carton
Delivery Time: 15-20 working days
Payment Terms: L/C, T/T, Western Union
Supply Ability: 6000000 pcs/year
Detailed Product Description
Communication: LoRaWAN Battery Voltage: 3.6V
Protection: IP67 Display: LCD
Weight: 1300G Dimension: 165X85X111mm
Working Current: <20MA Bandwidth: 64kHz
High Light:

Smart Water Meter


Lora Gas Meter

DN15/20/25mm LoRaWAN Smart Water Meter for Cold and Hot Water 


The wireless smart water meter consists of remote based water meter, wireless communication modules and other components. This product can complete the data collection of point-to-point through the gateway with low power consumption, long life and two-way data transmission. It
provides reliable protection for the accurate collection of real-time data; Wireless water meter uploads data to the gateway everyday automatically, then the gateway uploads data to the network platform automatically; This product is simple in structure, easy to maintain and replace, and connect with no cables. So, it is easy to install.



1. Operating environment:

Water temperature: 0.1℃~30℃

Protection grade: IP68

2. Operation water pressure: 0.03MPa~1.0MPa

3. Pressure loss: ≤0.1MPa

4. Main Parameters:

Power Consumption Static current consumption (wireless module doesn’t include counting sensor) ≤10µA
Wireless current receiving power consumption ≤18mA
Wireless current emission power consumption About 120mA







RF center frequency 433MHz
Modulation LORA
Frequency bandwidth 125KHz,250KHz can be optional
RF power 20dbm(100mW) (Typical)
Transmission rate 0.25-50kbps (LoRaWAN)
Receiver sensitivity -143dBm @SF12/BW 125KHz
Power supply 3.6V lithium battery More than 10 years
Sampling Method Hall sensor, double pulse Pointer sampling at 0.01, addend when positive rotation, subtrahend when inverse rotation.



Nominal Size



15 20 25
Maximum flow rate Q4 m3/h 3.125 5.0 7.875
Ratio “R” Q3/Q1   80 80 80
Permanent l flow rate Q33




2.5 4.0 6.3
Transitional flow rate Q22 0.05 0.08 0.126
Minimum flow rate Q11 0.031 0.05 0.0787
Minimum reading



Maximum reading 99999



Maximum Permission Error (MPE)
Q1≦Q≦,Q2 MPE =+ 5% Q2≦Q≦Q4, MPE= + 2% (For hot water metering, MPE=+ 3%)


Dimensions and diagram


Nominal size Length Width Height Thread
mm D
15 165 101 124 G3/4B
20 195 101 124 G1B
25 225 101 124


Allowable Maximum Error:
From the minimum flow to the low zone that does not include the demarcation flow: ±5%;
From the demarcation flow to the high zone including the overload flow: ±2%. 2.8 Communication Distance: City transmission distance: About 2km
The number of floors crossed: About 15 floors
Power Supply: The gateway needs an external 220V power supply; All prepaid costs are stored in the meter reading system. Based on the collected data of water consumption, it is determined whether the user owes fees.


Communication Introduction:
LoRaWAN is a set of communication protocols and system architectures designed for LoRa long-distance communication networks. When the module is powered on, it automatically sends a join packet. If no reply from the gateway to the network, the join packet will be sent in intervals. After the module receives the network access permission message by the gateway, it pushes a packet of heartbeat data; Since then, it starts timing. Actively push a pack of heartbeat data at intervals of 6 hours. The data upload mechanism can be timed or quantitative or both, and can also be customized on demand.

Device uploads packets

Name Data Instruction
Leading FEFEFEFE  
Frame initiator 68H  
Address A5 A4 A3 A2 A1 A0 Low byte first when sending
Frame initiator 68H  
Control code 91H  
Length 0CH  
Data identification 00004200 Low byte first when sending
Data (Note 1) XXXXXXXX Low byte first when sending
Status word (Note 2) XXXX Low byte first when sending
Battery voltage XX 15.37×xxH=xxxxxmV
Reserved bytes XX  
Checksum CS  
Terminal code 16H  

Note1: The data format is defined as follows:

  Data Format Code System Unit Remarks
Accumulated Water Meter Reading XXXXXXXX BCD Tons

Cumulative water consumption

The decimal place defaults to 2 bits of data. The format is: XXXXXX.XX

Note2: Status word is defined as follows:

ST0   D7 D6 D5 D4 D3 D2 D1 D0
Definition   Mandatory state Strong magnetic interference Overdraft status Alarm status Voltage Valve status
Instruction Reserved

0:no mandatory

1: Forced

0: normal

1: Overdraft

0: normal

1: Overdraft

0: normal

1: alarm

0: normal

1:Under voltage


00: open

01: Off

11: Abnormal

ST1   D7 D6 D5 D4 D3 D2 D1  
Instruction         Reserved Reserved Reserved Reserved



1.The water meter should be installed in a position where there is clean and dry and no direct sunshine or pollution or drowning.
2.The water meter should be installed horizontally, and the LCD should be upward.
3.Water flow must go with the same direction as indicated on the body of the water meter.
4.When assemble, the valve in front of water meter should be closed.
5.When assemble, the water meter should be covered to prevent from damage.
6.The water meter should be connected to the couplings first, and not directly to the water pipe. Extra parts include couplings and nuts.



DN15 / 20 / 25mm LoRaWAN Smart Water Meter 165 X 85 X 111mm 0

Installation and Attentions:
The installation and use of water meters shall comply with the relevant provisions of Chapter 6 of Standard GB/T778.2-2007 and Article 6.3 of JJG162-2009.

1. The water meter to be purchased should be based on the flow rate often used in the pipeline, and it should be close to the usual flow rate of the water meter.

2. Before installing the water meter, foreign matter and contamination in the pipe should be removed.

3. The installation environment should be suitable, anti- freeze, anti-pollution, waterproof, anti-magnetic and prevent mechanical damage. Water meters should be easy to read, install, maintain, and disassemble.

4. The water meter should be installed horizontally. The arrows on the case should point in the same direction as the water flow in the pipe. The pipes connected to both ends of the water meter should be installed on the same axis to prevent the water meter and accessories from being damaged.

5. A stop cock or valve can be installed upstream of the water meter


Contact Details

Contact Person: Mrs. Ada Yang

Tel: 86 15623095278

Fax: 86-27-84967521

Send your inquiry directly to us (0 / 3000)