In reply to Michael Hood:
I think I only had a couple of the old model, including replacements, before I got tikka xp as replacement.
I quite liked it when it worked, it must have switched on and off when required.
Will look at the newer model, the tikka xp is not quite intense enough sometimes, otherwise excellent.
I also have some model of petzl that always seems harder to switch on than log into a secure website.
Edit, it all seemed a lot easier when a zoom was the obvious choice.
I have a red petzl from 1980 that still works well, had to get one connection soldered around 1987.
Post edited at 17:58