Good morning great people of Nigeria.
Its a cool morning here, 2019 and I feel its best time to introduce us to one form of security in our homes among many.
Here I will be talking about the Door Access Control (Finger Print, Card Reader or Pin).
This device when installed in the house, office, or property prevent access into such environment by anyone who does not have his/her fingerprint registered on the device, or access card or given the pin.
The key of our homes, offices, or private property is not enough for preventing access now a days. Technology has provided us a better security means. Let me upload a picture of a particular installation we did and explain each part of the device.
Thanks

Now the system has this number of devices inside it
1. EM Lock -Blue Pointer
2.Door Closer- Black Pointer
3.Fingerprint,Card reader or Pin-Red Pointer
4.Power-Green Point
5.Exit Switch

Let me start from Number 5.
The Exit Switch is just like a normal switch, its normally placed inside the house so you can exit the building once the door is closed, without inputting your finger print. Most houses has two finger print/card reader for each door. Entry and Exit. Which is actually what normally comes with the device. But in the situation where you are not using the second fingerprint you put the exit switch.

Number 4
Power control.
Here it's a 12v DC power control. Though supplied by AC 240V. Its powers both the finger print, em-lock and is responsible for the switching- activation of the Lock to close and open. Thats where the main connection takes place.

Number 3
Finger print, card reader or Pin
This device is what controls the access. If your finger print Is not registered on the device, you can't have access into the house. Also it comes with 2-4 card readers. Which also must be registered into the device. Once its registered and you have the card, you can have access into the house by just flipping the card at the sensor point of the reader. Also a PIN can be configured into it, so that by just imputing a pin, you have access to the house.
The Reader can also be used as clocking machine for office where staffs finger print are registered and whenever they come to the office they clock in by putting their finger print, it registers it in a excel format their time in and out, and at the end of the month, the file can be copied from the finger print reader using a flash and read on your laptop to see the time attendance of your staff.
The finger print can be set in such a way that between a particular period of time the access to the environment will be open. Say you set it to between 3pm to 6pm the finger print will deactivate, so anyone can come in and go out. The after that time it activates, and access can only be granted only by using your fingerprint or card. Maybe you are having a birthday party in your house, you activate that.
And many other functions which it performs.

Number 2
Door Closer.
It basic function is to close the door for you when you open it. You don't need to push back the door to close it.
Once you open the door, just leave it, the door closer helps you close the door.

Number 1
EMlock Bracket
Em-lock is usually weighted in KG/Lb. There are EM-Lock that when place on your door. Even if you through 5 bags of cement on the door, it won't open. E-M is electromagnetic. If this bracket is properly fixed, based on the KG, except a force above that Kg is thrown at the door, The door won't open. That's how powerful it is.

Now this aspect of securing your house can be placed anywhere in your house. Mainly entry point from outside the house and probably places where you don't want people to access in the house you can put this device.
The Staff attendance can take up to a Thousand staff finger print.
Once light goes off the device deactivates. So there must always be a backup supply like your inverter.
Thank you.
I hope we learnt something today.
Please let's ask Question and Give Contributions