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Product Description

STS-prepaid-water-meter

The STS prepaid water meter supports the STS prepaid protocol, allowing tokens to be issued through the CIU, infrared unit, or meter keyboard for prepaid recharge, valve control, and other functions. Additionally, the STS prepaid water meter features a concentrator that enables LORA wireless automatic communication between meters during readings, with a network level capability of up to level 3, greatly enhancing receiving sensitivity. This meter is characterized by its accurate billing, user convenience, and efficient management.

Product parameter

Q3: 2.5m³
Turndown ratio: R100
Accuracy level: Class2
Temperature grade: T50
Pressure level: PN16
Pressure loss level: Δp63
Protection level: IP68
Electromagnetic environment level: E1
Installation environment level: O
Installation direction: H
Battery life: ≥6 years (26500 batteries)

communication mode

Infrared communication: Equipped with an infrared transceiver unit, use an infrared serial port tool to read and write the meter.
Handheld communication: The dedicated watch mobile phone software cooperates with the LoRa antenna module to read and write the watch.
STS CIU communication:

-The remote control sends short code instructions to read and write the meter.

-Send the token code and receive the return information.

LoRa concentrator communication: issue token codes to the meters through the server, and perform read and write data operations on the designated meters.

display function(lCD liquid crystal display)

Valve status indication: displays the open and closed status of the valve.
Battery power indication: Use percentage to indicate battery power.
Communication indication: When the water meter is in communication status, it indicates that it is connected.
Anti-tamper indication: The icon lights up when the anti-tamper alarm is triggered.
Magnetic attack indication: The icon lights up when a magnetic attack alarm is triggered.
Low balance indication: When the water consumption is greater than the set balance, the icon lights up.
There are corresponding fault code indications when input errors, magnetic attacks, tampering, and low voltage alarms occur.
The liquid crystal displays the current status of the water meter in real-time (communicating, connecting status, waiting status, and constant display status)
Constantly displayed status: the display of table serial number, remaining water volume, last recharge volume, total purchase volume, and accumulated volume.
When entering the token code, such as water meter reception or rejection, secret key expiration, input timeout, used, overflow, etc., all display in compliance with STS531-4, STS531-5-0, STS531-6-1-07 certification document pair display content requirements.
Able to read and display water meter frequency, network ID, KEN (key expiration number), KT (key type), EA (decryption algorithm), T1 (rate number), version number, date, and time.