Note - if you have a very old Duo that does not light up immediately when following above procedure, then it might be necessary to reverse batteries in battery box as some old Duos were wired up the opposite way. Turn batteries +ve to -ve (and vice versa) and try again. If removing duo module, then use a small screwdriver to lever up module. Do not remove module by pulling on reflector.
Despite the long winded explanation, fitting is in reality very simple. However, the Petzl Duo has been manufactured over many years, and there is potential for manufacturing inconsitencies that we feel could potentially cause fitting difficulties. To date, we have not fitted sufficient v3 Gecko units to identify potential fitting issues. However, until we are confident that no such issues exist, and that fitting is monkey proof, sales are only available to UK customers.
Gecko spot module is fitted with simple 3 pin push fit into the mes screw fitting used by the halogen bulb. To fit, remove the Petzl Duo front window by un-screwing the grey plastic bezel anti-clockwise. Remove the Petzl Duo reflector and unscrew the halogen bulb.
Now fully retract the zoom feature for the halogen bulb. The zoom lever will be in the down position, and the white halogen bulb holder will be retracted into lamp body. It is important to do this before Inserting the module.
Insert the module, ensuring it is located over the raised yellow pin in the duo body. Refit the front window, tightening bezel to Petzl alignment marks. Refitting front window will hold module securely in place.
Ensure that you have batteries in Duo and switch the lamp on! Grey (and red) lever should be in upwards position. The lamp should not operate at this point!! (because the zoom feature is retracted and therefore there is presently no electrical contact between lamp and pins on module.
To make this contact, operate the zoom feature forward until a contact is made and the module lights up. Don't over do this as it might be possible to damage optic.
Once a consistent connection has been established, then the zoom feature should be 'left alone', and the module can now be turned on and off via the main grey/ red switch.