[Ticket Question] Digital Security Keypad recommendations please

[securitywarehouse]

I am looking to buy a security keypad for the college I work at, we are wanting one where you have a digital code it is to go onto a filling room door to keep out other staff and students.

Any ideas into which one we could buy, would like it to be as cheap as possible

[accounts3]

The cheapest need not necessarily do the job, the unit should be bought on the amount of traffic it will take. Cheaper units will only be applicable for low traffic