Features
1.Using picosecond-level high-precision metering chips;
2.with power-off data automatic saving;
3.with dual metering function of heat and cold;
4.with 24-month historical data storage, recording and query;
5.Abnormal alarms such as battery undervoltage, sensor failure, abnormal temperature, etc.;
6.A variety of adaptation calibers, water inlet or return installation methods can be set;
7.Support infrared, M-BUS, RS485, LoRa, LoRaWAN, NB-IoT, Cat.1, TTL, etc.;
8.Support multiple baud rates of 1200bps, 2400bps, 4800bps, 9600bps;
9.Support infrared and OTA, continuously optimize the functions.
Technical Parameter

Performance	Parameters (R50)
Nominal diameter	Minimum Flow QI (m3/h)	Normal Flow Qp (m3/h)	Maximum Flow Qs (m3/h)
DN15	0.03	1.5	3
DN20	0.05	2.5	5
DN25	0.07	3.5	7
DN32	0.12	6	12
DN40	0.2	10	20

Performance	Parameters
Measured medium	Domestic water (other liquids need to be customized), and the pipe is filled
Power supply mode	DC3.6V (disposable lithium battery)
Maximum water volume reading (m3)	999999.99
Maximum heat reading (kWh)	99999999
Accuracy class	Class 2
Range ratio	R50 (optional R100)
Nominal diameter	DN15DN40
Pressure loss	25kPa (at normal flow rate)
Heat loss calculation	Starting from 1K
Temperature difference range	375K
Temperature measurement range	4℃95℃
Temperature resolution	0.01℃
Environmental class	Class A
Temperature sensor	PT1000 platinum resistor
Communication method	Infrared/M-Bus/RS485/LoRa/LoRaWAN/NB-IoT/Cat1/TTL, etc.
Protection class	IP68