Fail secure(NO) means when power off, the lock is locked; Fail safe(NC) means when power on, the lock is locked

Advantage:
Low Temperature, safe & Durable
Low Power, Environmental Protection
Special photo-electric control, three steps current application
Long Life with 500000 cycles
MOV Provides Reverse Current Protection
Superior Strength Aluminum Alloy, Solid Stainless Steel Bolt
Fail secure - locked when power is off.
Suitable For Wooden Door, Glass Door, Metal Door, PVC Door

Specifications:
Lock bolt: The diameter og 12.5mm stainless core,extending the length of 15mm
Main body: 200(L)x28(W)x3(H) mm
Net weight: 740g
Voltage: DC12V
Current: 0.14A (Standby) / 1.3A (Start)
Solid Bolt : Polishing housing, 1000Kg Holding Force

Diagram
Red wire for + power
Black wire for - power
White wire for COM
Yellow for NC
​Blue for NO

Package include:
1 x Electric Lock
1 x Extension piece
1 x Face-plate
1 x Magnetic Base
1 x Bracket
1 x Screw Kit
1 x Manual