Key Features

•LoRaWAN Wireless Communication – Supports 868 MHz / 915 MHz frequency bands

•Long‑Range Transmission – Up to 15km line‑of‑sight in open areas

•Battery‑Powered Design with up to 10‑year battery life – Infrequent battery replacement

•Remote Monitoring with Near‑Real‑Time Data & Leak Detection – Enables remote tracking of water consumption

•Two Versions Available: Ultrasonic (no moving parts) – Both highly durable

•IP68 Protection Rating – Performs reliably under harsh working environments

•Tamper‑Proof & Low‑Maintenance – Prevents unauthorized tampering

•Data Logging with Configurable Reporting Intervals – Supports on‑board historical data storage

Applications

• Residential household water metering

• Urban and rural municipal water‑supply projects

• Commercial buildings & complex monitoring

• Farmland and agricultural irrigation

• Factory and industrial‑site water consumption

Technical Parameters

Performance	Parameter
Measured medium	Domestic water (other liquids can be customized), full-pipe condition required
Power supply mode	DC 3.6V (disposable lithium battery)
Accuracy level	Class 2
Turndown	R250 / R400
Nominal diameter	DN15 ~ DN40
Maximum allowable working pressure	1.6MPa
Environmental level	Class O
Temperature level	T30, T50, T90 (optional)
Upstream flow field sensitivity level	U10
Downstream flow field sensitivity level	D5
Electromagnetic compatibility level	Class E1
Communication interface	RS-485, M-Bus, Infrared, NB-IoT, LoRa, Cat1, TTL, LoRaWAN (optional)
Protection level	IP68
Keys	Touch keys

Display solution and range

Q₃ (m³/h)	Corresponding Caliber	Cumulative Flow‑Resolution (m³)	Cumulative Flow‑Display Range (m³)	Instantaneous Flow‑Resolution (m³/h)	Instantaneous Flow‑Display Range (m³/h)
Q₃ ≤ 6.3	DN15‑DN25	0.001	0~9999999	0.00001	0~999999
6.3＜Q₃ ≤16	DN32‑DN40	0.001	0~9999999	0.00001	0~999999

Sequence Number	Alarm Event
1	Temperature sensor abnormality
2	Transducer or flow field abnormality
3	High temperature alarm
4	Low temperature alarm
5	Storage abnormality alarm
6	Leakage alarm
7	Pipe burst alarm
8	Empty pipe alarm
9	Backflow alarm

product-1370-1246

Flow range

Nominal Diameter	Ratio	Start Flow Rate QS (L/h)	Minimum Flow Rate Q1 (L/h)	Transitional Flow Rate Q2 (L/h)	Nominal Flow Rate Q3 (L/h)	Overload Flow Rate Q4 (L/h)
DN15	R250	2.4	10	16	2500	3125
DN20	R250	4	16	25	4000	5000
DN25	R250	6.4	25	40	6300	7875
DN32	R250	10.2	40	64	10000	12500
DN40	R250	16	64	100	16000	20000

Nominal Diameter	Ratio	Start Flow RateQS(L/h)	Minimum Flow RateQ1(L/h)	Transitional Flow RateQ2(L/h)	Nominal Flow RateQ3(L/h)	Overload Flow RateQ4(L/h)
DN15	R400	2.4	6	9.6	2500	3125
DN20	R400	4	10	16	4000	5000
DN25	R400	6.4	16	25	6300	7875
DN32	R400	10.2	25	40	10000	12500
DN40	R400	16	40	64	16000	20000

lora Frequency Brand Table