Multiplex SMART SX FLEXX Notice D'utilisation page 79

Universal models
light control on a vehicle (off / dipped beam / full beam), 3-speed gearbox, etc.
Button
In case of a button, a function remains switched only as long as the button is
pressed and held.
Typical use: hooter, foghorn, headlight flasher, weapon actuation, etc.
Page 78
SMART SX FLEXX