The Flame "DUALKEY” module is a small pingable trigger envelope module, designed for small mobile euro racks.

There are two channels with following functions:

SHAPE: voltage controllable AR-envelope (release phase channel 1=logarihtmic 2=linear)
TIME: voltage controllable time of the AR envelope
LEVEL: set the output voltage of the AR envelope
END-OUT: trigger output of the end of the envelope circle (like a trigger delay)
KEY-OUT: trigger/gate output of the key
KEY-IN: trigger input for pingable envelope

There are three play modes:

SHOT: one shot of the envelope
GATE: hold on the envelope after the release phase
LOOP: the envelope play in loop (like a lfo) while hold down the key