Door release keyswitch, External Lock Override

key switch is an emergency switch button with a special mechanical key for emergency situations. Simple design, exquisite and elegant stainless steel panel.
Stainless steel shell, safe and durable
Tested to 500,000 cycles
Defend and duplicate the key, safe to use
Three contact output, suitable for all kinds of the locks

Non-Duplicate Keys.
Dimension: 86 x 86 x 20mm .
with led.
Contact output: NO/NC/COM .
the panel is stainless steel materia