JSP’s EVO5 Dualswitch is the only helmet which is certified to both construction helmet standard EN397 and climbing helmet standard EN12492, with the ability to change between the two at the flick of a switch. This changes the retention strength of the helmet’s four-point chinstrap. Flick the switch up when working at ground level to give the chinstrap a release force of between 15-25kg for EN397, so the helmet can release if snagged. Switch down to give the strap a release force of greater than 50kg for EN12492, to limit the risk of losing the helmet in a fall from height.
