Product Description
The meter supports the STS prepaid protocol. Tokens can be issued to the STS meter through the CIU, infrared unit, or meter keyboard to realize prepaid recharge, switch valve, and other functions. At the same time, the concentrator supports LORA wireless automatic communication between the meters during meter readings. Networking function, the network level can reach up to level 3, which greatly improves the receiving sensitivity.
The water meter has the characteristics of accurate billing, convenient use, and efficient management.
Product features
- Ladder water prices can be set (not less than 10 steps), can store 50 TIDs for easy query,
- Monthly water data can be stored and recorded for 10 years, has holiday water, overdraft, insufficient balance alarms, valve control, Token code can reset the water meter, etc. Function;
- CIU uses LoRa wireless to issue Token codes, and the communication distance in residential areas is not less than 300 meters;
- CIU and user STS water meters can be paired one-to-one or the pairing can be changed;
- LCD function display facilitates users to read meter data and recharge information.
- Independent battery compartment, the battery is easy to replace
- Mechanical and electrical separation design makes after-sales service more convenient
Meter electrical parameter
- Working frequency: 868MHz frequency band, can float up and down ±10MHz.
- Modulation method: LoRa linear frequency modulation.
- Power consumption: static average current <30uA, maximum power consumption during meter reading <2mA (use ER26500 lithium sub-ion battery to read the meter once a day and have a service life of not less than 6 years).
- Power supply voltage: 3.0V~3.6V.
- LoRa communication distance: no less than 1000 meters transmission distance (in open areas), and communication distance in residential areas no less than 300 meters.
- Operating temperature of electrical parts: -40℃~85℃.
- Working humidity of electrical parts: 10% ~ 90%.
- Valve switch timeout waiting: 20 seconds.
- Valve blocking current: ≥260mA.
- The maximum instantaneous drive current of the valve: >800mA.
- Pulse sampling period: 0.25 seconds.
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