The Panic Exit Device mainly used on the emergency exit door of large supermarkets, shopping malls, office buildings, hospitals, schools, factories and other public places with a large flow of people. It can prevent outsiders from entering the interior without permission. It can also achieve the safe escape of internal personnel in emergency situations such as fire. There are usually two types of escape locks: one is the standard push-bar type, and the other is the standard down-press type. In recent years, the fire department has extremely high requirements for the safety of fire escapes in major shopping malls, supermarkets, schools, hospitals, and other places. The new fire safety laws and regulations require public places to install Panic Exit Device. Regardless of whether it is an standard push-bar lock or a standard push-down escape lock, the two types of escape locks produced by Lelang hardware manufacturers have fire detection reports and switch tests.