Honeywell Commercial Security MPIEOP4 relay interface module

Who this is for

For the installer — this is the relay interface module supplied under Honeywell Commercial Security part number MPIEOP4. Specify it by that part number.

In plain English: this is a relay interface module made by Honeywell Commercial Security. The part number MPIEOP4 is the manufacturer's own code for this exact version of it.

Similar-looking items in the same family often differ only by a suffix on that code. If you are replacing something, match the code rather than the picture.

Buying this in the UK

We are a UK supplier and this relay interface module is sold and shipped from the UK. Prices are shown in pounds sterling.

This item is non-returnable, excluding faulty goods.

We do not quote a warranty term for this part.

Ask us and we will check it for you. Your statutory rights are unaffected.

Stock on this line moves, and lead times move with it. Ask us for the current position before you commit to a date on site.

Questions we get asked

Is this the exact relay interface module I have been quoted? Check the manufacturer part number MPIEOP4 against your quote. That code is the only reliable identity for this item.

Is there a datasheet? Yes — the documentation attached to this listing was checked and names this exact part number. Documents that named only the family, or a different item, are not attached.

What if I order the wrong version? Tell us the installation you are matching and we will work back to the part number with you. That is a faster conversation than a return.