The Auto Belay is the Silent Partner on the belay! It comes in handy if you don’t have a human belay partner around.
You just clip in to the self-locking Karabiner and start climbing. It feels little unnerving at first, because you don’t feel the reassuring tug which a human belayer will provide, but you can be sure this belayer will only let you down gently! Just go up to the top (or as far as you like) and simply let go- the Auto Belay will slowly lower you to the ground.
Only climbers who are signed off as fully competent on roped climbing may use the Auto Belays.