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Pairing of a User Interface Unit with a Meter

A user interface unit (UIU) is a remote access terminal for STS prepayment meters. The device is placed inside the users premisses while the energy meter is mounted outside and mostly not direct accessible. Some meter manufacturers are using the term customer interface unit (CIU). The functions are the same.

The main purpose is to charge the meter with credit. By various short-codes it’s possible to do many kinds of queries for meter status and consumption. The short codes are not unified, so refer to your user manual for operation.

UIUs are paired with the energy meter when leaving our factory. Depending on the utility order CLOU interface units are communicating with the meter by radio frequency (RF), power line (PLC) or by wired RS-485.

User Interface Unit

If the UIU is not communicating with the meter you can pair it again by typing 1593570 and the 11 digit meter number, then press the enter key (red or blue). The meter number is printed on the meter and on your customer card which you use to buy credit.
After successful pairing the display will show OK.
Note: This is only working for CLOU energy meters.

There can be also other reasons for a communication fail. If the UIU is connected by power line and you are disconnected, batteries need to be inserted in the UIU to recharge the meter or query the status. If this meter is in tamper mode, a recharge is impossible before clearing the tamper.

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115 Replies to “Pairing of a User Interface Unit with a Meter”

  1. My inhermetre CIU has no display. I have another same CIU from a different meter that got faulty but its CIU is okay… Can it be paired? How please?

    1. It should be possible, but each manufacturer has different codes. You need to check the InHe Meter operation manual or contact your power supplier.

  2. I suspect my I’d was register to meter and it was not delivered to me by the contractor, how can I use my I’d to identify meter number

    1. Each power company has a different process. Your meter number is printed on the meter. In addition, you should have a user card. With this information, your point of sales can check whether you are registered for their service or not.

    1. That would be nice. Unfortunately, there is no standard. So every meter manufacturer has defined their own sets of short-codes.

  3. I like the ideas push
    My name is Emmanuel Kollie, from West Africa, Liberia.
    I work with the Liberia electricity corporation.
    I will like to recommend from you some major technical manual code toward this meter.

  4. My ciu as lost how can I interface with another wish is in use to load token in my meter

    1. It depends on the meter manufacturer. The instructions for CLOU meters are in the article.

    1. My CIU has soak inside water due to the Heavy entering the house, ever since then the CIU is working normally but it’s not commuicate with the meter outside.i can’t able to load a token..what can I do? I need a solution, can I get another one

  5. A tampered token has been given more than twice but the relay still occurs.., what should we do?

    1. Most likely, either the terminal cover is still open or the meter is wired wrong. You need to inform your power company.

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