The control box is a magnetic lock, electric lock control device; wide voltage working range, compatible with access control system, visual building intercom, non-visual building intercom and other working environments. The control box has a lock head interface and a knob, which can easily realize the door opening with the key, and the door can be turned to open the door. The control box has a strong load capacity. Under the condition that the power system power is sufficient, the control box has a magnetic lock, and the circuit board can work stably for a long time without heating. (with delay function) Features: 1. The magnetic lock with 3 keys to open the door, stable and easy to use. 2. Applicable to metal door building intercom electric lock control box, community knob control box, electric lock control box. 3. It can be used in conjunction with various types of magnetic locks and electromagnetic locks instead of electronic locks. 4. It is commonly used in building intercom doors, with output signals with lock. With the network access control, the status of the lock can be detected in front of the computer. 5. It can be used with any electric or magnetic lock, two-color indicator light and buzzer sound, with adjustable switch. 6. It is suitable for anti-theft doors, intelligent intercom doors, metal doors, fire doors and wooden doors in intelligent community. Specification: Condition: 100% Brand New Item Type: Magnetic Lock Color: As Pictures Shown Material: Iron Input Voltage: DC 12V Door Opening Method: Unlocking by knob inside the door/unlocking by key outside the door Safety Type: Power-on lock, power-off unlock Working Current: 5mA Maximum Load Current: 2A Ambient Temperature: -40-50℃ Ambient Humidity: 10%-95% Package List: 1 x Magnetic Lock Control Box 1 x Cylinder 3 x Key 1 x Mounting Accessories Package 1 x Screw Package Locking Indication: The power status indicator is red, the unlock status is green and black line input is negative, the red line input is positive 12V, the yellow and green lines are connected to the magnetic lock, the white line unlock signal input is negative, and the brown line unlock signal is input positive. 1、The magnetic lock with 3 keys to open the door, stable and easy to use. 2、Applicable to metal door building intercom electric lock control box, community knob control box, electric lock control box. 3、It can be used in conjunction with various types of magnetic locks and electromagnetic locks instead of electronic locks. 4、It is commonly used in building intercom doors, with output signals with lock. With the network access control, the status of the lock can be detected in front of the computer. 5、It can be used with any electric or magnetic lock, two-color indicator light and buzzer sound, with adjustable switch.