On the King Kombo Industrial you can enjoy the benefits of Ground Cue®, the bottom step alert system. When you reach the bottom step, Ground Cue makes an audible “click” to let you know you have safely reached the ground. Designed to help reduce injuries from people who step off their ladders and steps too early, this system has both an audible ‘click’ and a vibration you can feel through your boots, so it doesn’t matter how noisy the environment you’re working in. You either hear it, or feel it, and then you know it’s safe to step off.