User Interface Unit UIU

user interface unit

The user interface unit (UIU) is a device for remote access to STS payment meters.
If meters are mounted in a box or on a pole they can not be accessed for token input. In this case a UIU is necessary for STS operations.
Beside of token transmission the UIU provides various information about meter status and consumption.
Depending on the meter vendor a UIU is also named as CIU (customer interface unit). The basic functions are the same.

ModelThe model type follows the meter type. It's indicated above the display.
Example: CL710K11B
Mains power supply220 V to 240 V
Backup power supply4 x 1.5 V AAA battery
Communication interfaceRS-485, wired connection/radio frequency (RF)/power line communication (G3 PLC), the interface is depending on the order
Ingress protectionIP 51
Operating temperature-25 °C to +70 °C
LCD displayLCD size: 57 mm x 23 mm
Digit size: 10 mm x 5 mm
Backlight on activation
Dimensions144 mm x 80 mm x 42 mm 
Mountingwall mounted, with fixing cradle

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    Editor's note: This article was originally published in March 2020 and has been updated for comprehensiveness.

    72 Replies to “User Interface Unit UIU”
    1. Greetings

      May I Know the communication radio frequency range of your customer interface units

      1. Thank you for your question. Our user interface units (UIU) operate within the 433 MHz frequency band. This is a common choice for short-range communications in many wireless control and monitoring applications, due to its relatively long wavelength and ability to penetrate walls and other obstacles more effectively than higher frequency signals.
        It's important to note, however, that not all of our UIUs utilize radio frequency communication. Alternative methods of connectivity in our product range include power line communication and RS485, catering to various customer- and installation environments.

      1. It's the nature of all kinds of metering devices used for billing purpose, that they can't be reset or cleared. Even the manufactures have no possibility, once the device is leaving the factory.

      1. Thank you for your comment. For CLOU meters, errors have eight kinds, for example, TOKEN format error or overflow. We have published an article to explain errors in detail. Please click here and read to find your answer out.

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