That is because of my friends said that their company installed time attendance security door is very wrong, if I want to install this product, then you can contact him directly, then also because of my friend’s trust I choose and buy him the same product, but now it seems it is advisable to me at that time the idea of this, a time attendance security door the quality of my friends recommended what are very good, but the price is to be a little discount than other brands of time attendance security door, the most important is the attitude of their staff is very good, as long as it is on our side there are any problems they all the staff will arrange to come to help.