Choosing between the Hammar or UML Pro Sensor Elite inflation systems

Both inflation systems are very effective but are suitable for different situations. In general, the Hammar system is better suited to very wet conditions as it relies on water pressure to activate.

The UML system is easier to service and parts are more readily available around the world. They are also very resistant to wet conditions - check out the “How Water Sensitive is a Deckvest Pro Sensor 170N Lifejacket?" video.

For more inflation system information see Lifejacket Inflation Systems Explained.