Product Description

Lora Wireless Prepaid Token Water Meter

Product Overview of Lora Wireless Prepaid Token Water Meter

Lora Wireless Prepaid Token Water Meter,the DDS5558 wireless remote water meter uses a high-performance, low-power LoRa wireless module. Its special LoRa debugging method can greatly increase the communication distance, and at the same time, it can cooperate with advanced and efficient networking algorithms to realize complex environments by relaying neighboring nodes to each other. Long distance communication. The module can implement up to 9 relays. The communication distance is 10 times more than that of the ordinary point-to-point mode. Lora Wireless Prepaid Token Water Meter has the characteristics of small size, low power consumption, and strong anti-interference ability.

Low-power wireless meter reading system integrates metering, two-way communication and meter reading control valves. Lora Wireless Prepaid Token Water Meter has long transmission distance, low power consumption, small size, high reliability, convenient system expansion, simple installation and maintenance, and high meter reading success rate. The TDMA time division multiple access communication method automatically synchronizes communication time units. Using frequency hopping technology to avoid the same frequency interference and improve the reliability of transmission. The use of transmission rate and transmission distance adaptive algorithm to effectively improve system capacity.

Features of Lora Wireless Prepaid Token Water Meter

1、Compliant with the regulations of GB/T778-2007 and CJT133-2012 .

2、Support for power-off reading storage.

3、Support group reading and point-to-point meter reading function

4、micro-power wireless communication module, effective transmission power 30mW (15dbm) .

5、The wireless communication operating frequency is 480MHZ , which belongs to the special frequency band for metering and does not need to apply for frequency points.

6、The module operating voltage is +2.8V ~ 3.6V , ultra-low power design,

quiescent current≤ 9uA,average power consumption ≤ 25uA; Maximum pulse current emission≤70mA, valve-controlled maximum pulse current ≤160mA; battery life more than 10 years.

7、Upload data every 4 hours or metering 0.5,visual communication distance is greater than 2000 meters.

8、4 communication channel reserved，More reliable to avoid the frequency disturb .

9、Double reed pulse measurement, antimagnetic attack design, magnetic attack detection alarm.

10、 Supports valve control, remotely sends valve control commands via handheld devices or systems.

Technical parameters of Lora Wireless Prepaid Token Water Meter

Water temperature	0.1℃~65℃
Operating pressure	≤1.0MPa
Pressure loss	≤0.063MPa
Storage temperature	-25℃~65℃
Operating current	Receive Operating current≤30mA , emission Operating current≤70mA
Transmission frequency	475~495MHZ
Communication Protocol	DLT/645，CT/T188，STS，DLMS，or customized
Transmission distance	Visual Distance≥ 2000meters
Communication interval	Receiving window≤ 3ms , receiving interval≤ 8s , transmitting time≤ 400ms
Maximum allowable error	From the low zone that includes the minimum flow (Q1) to the zone that does not include the boundary flow (Q2): ± 5%. From the demarcation flow (Q2) to the high zone including the overload flow (Q4): ± 2%.

Basic Parameter of Lora Wireless Prepaid Token Water Meter

Nominal diameter	Meter and joint length	Length	Width	Height	Connection thread
					d	D
15	2 5 9	1 6 5	1 1 0	1 4 5	R 1 / 2	G 3 / 4 B
20	3 0 0	1 9 5	1 1 0	1 4 5	R 3 / 4	G 1 B
25	3 4 4	2 2 5	1 1 0	1 4 5	R1	G 1 1 / 4 B