On this page hopehully, you will find all relevant information for your 6 Monthly LOLER inspection including understanding the Batch code, variations of labels over time and serial numbering.  


Serial Numbering & Batch Codes 

Due to evolution and a steep learning curve the serial numbering has taken several forms since the release of the harness in November 2023 but hopefully this will help you understand what you have in front of you.


Batch O2023091504

This is the 1st batch of 20, unfortunately due to several issues this label does not show either a serial number or a CE number (CE0082) so the DoC, the link available on this page and will confirm that information for you.

On some you will find a small green tag, this holds all the relevant information along with the purchase date and owner name. In order to read this you will need to scan it with your phone using NFC, Andriod will do this automatically, iPhone users will need to download a free NFC reader app such as NFC Tools.

Batch O2024030501

This is the second batch released in late April 2024 and on this release you will find a small QR code sticker in the bottom right of the label. This will have a visible serial number, ie TLAM0046 which is also contained in the QR code. Please note, the QR does NOT direct you to a Website and only contains the serial number.


The batch code has 3 sections to it, for example;


O - Factory product ID

20 - Day date

24 - Year / 2024

03 - Month / 03 March

0501 - Factory run and amount of batches made

This date information is correct for the Halo Open ring attaching the bridge although the last 4 digits will differ due to being produced specifically for the harness on each order in a separate ISO 9001 registered factory.

Should this information differ, it can be assumed that it is a replacement part and the date code to be taken into consideration with regards lifespan and retirement of the part.

TightLine Arb

33 Hamilton Drive, Newton Abbot, Devon, TQ12 2TL


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