When we buy new device such as Pelco HK4220 we often through away most of the documentation but the warranty.
Very often issues with Pelco HK4220 begin only after the warranty period ends and you may want to find how to repair it or just do some service work.
Even oftener it is hard to remember what does each function in Home Security System Pelco HK4220 is responsible for and what options to choose for expected result.
Fortunately you can find all manuals for Home Security System on our side using links below.