ISC Reissues UltraLink Stop Use Notice


Adventure Park Insider—Natick, Mass., March 28, 2024—International Safety Components (ISC) has reissued a stop use notice and product recall for the ISC UltraLink. The affected batches of UltraLink belay devices include:

LK100A1.2: From batch 170431 through to 177209

LK101A1.2: From batch 170433 through to 176974

An inspection notice was originally released in November 2023 and a stop use notice was issued in December 2023 for the affected UltraLink devices. 

The full text of the March 2024 stop use notification is below:

Important Safety Notice: ISC UltraLink

Safety Notice/Product Recall

(originally issued December 2023)

Following on from the Inspection Notice (issued in November 2023), our team has been intensively investigating the potential risk and the root cause of the problem. Our investigation identified that the press fixture used to secure the assembly of the SafeLock button moved outside of specification, creating the potential for a faulty press fit of the button, which can lead to the button turning open and coming apart.


Due to the risk of unintentional opening of the device, which could result in a life-threatening situation, we are issuing this notice instructing users to stop using their device, if it falls within the range of serial numbers:

LK100A1.2: From batch 170431 through to 177209 (inclusive);

LK101A1.2: From batch 170433 through to 176974 (inclusive).


Manufacturing corrective actions have been introduced to repair and ensure that the press fixture remains within specification; and additional procedures have been introduced to ensure that the SafeLock buttons are secured correctly. Validation testing has been successfully completed and production of UltraLinks has resumed, with this new process in place.

To start the recall process please click the ‘Register’ link below:


Alternatively, call our Customer Service Team:

North & South America: +1 (763) 360-2135

UK, EK, Australasia: +44 (0) 1248 363 125

Please accept our apologies for the inconvenience. User safety is at the core of everything that we do and remains our highest priority. We appreciate receiving feedback with any concerns related to product safety.

For more information visit:


About Author

Sarah Borodaeff is the former research editor for Adventure Park Insider magazine and current freelance contributor. A professional ski bum and former zip guide, Sarah enjoys any excuse to talk about outdoor adventures.

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