In August 2011 I emailed Portland Design Works the following:
... bought a third Radbot 1000 today to supplement the two we already own and like very much. We were ... disappointed with the new "Cornea Blitz" mode and would prefer the original "ramp up then down, three flashes, repeat" pattern. I see from several postings on BikeForums we are not alone in preferring the original pattern.Dan Powell at Portland Design works promptly replied:
If you bring back this original pattern either by replacing the "Cornea Blitz" or adding it as a fourth pattern, would you please email me and state the change in modes on the outside of the packaging? Until then, we do not anticipate purchasing more Radbot 1000's
Thanks for the feedback. It sounds like you are looking for the zZz pop flash? We heard from several folks that wanted this flash pattern back, so we changed the circuit on the lights. The last two batches of Radbots have that flash pattern back. So currently, the Radbot 1000 has three settings, zZz pop (or as you describe "ramp up then down, three flashes, repeat"), Cornea Blitz, Steady.
The problem, obviously, is if you are buying them from an online vendor, the vendor and the workers in the shipping department may or may not know exactly which version(s) they have in stock or ship to you. I think there may be a sticker or something designating which version is in the box, but unfortunately it may not be obvious and with several people involved in an online transaction, what you request many not be exactly what you get.