What's in the box:

Single Door 12V Electric Magnetic Electromagnetic Lock 180KG (350LB) Holding Force for Access Control (Standard)

Features:
Use magnetic power to lock the door, 180kgs (350lbs) holding force.
Built-in reverse current protection device (MOV).
Alluminum shell adopts high strength material, with hard anodised processing.
Corrosion resistant.
Good quality and durable to use.
Can be opened by push button, remote controller, etc.
Fit for wooden door, metal door, glass door, fireproof door, etc.

Specifications:
Holding force: 180kgs
Voltage: DC 12V
Current: 380-430mA
Working temperature: -10 to 55 Celsius degree (14 to 131 Fahrenheit degree)
Humidity: 0 to 95%
Working mode: power-on to lock
Lock size: 17 * 3.8 * 2cm / 6.7 * 1.5 * 0.7in
Lock weight: 499g / 17.6oz
Plate size: 13 * 3.3 * 1cm / 5.1 * 1.3 * 0.4in
Plate weight: 331g / 11.6oz
Package size: 20.5 * 5.7 * 5.7cm / 8 * 2.2 * 2.2in
Package weight: 953g / 2.1lb

Packing list:
1 * Electronic magnetic lock
1 * Armature plate
1 * Bag of installation kit
1 * Pad