Introduction
210MF (Fail-safe): Also known as the fail-open. When the electric current is applied to the strike, it will lock up the door. It operates just like the EM lock mechanism and if there is a power failure, the strike will release the door. The fail-safe unit operates on direct current (DC) with the same function with EM lock, the connection with the FingerTec device is almost the same with EM lock connection.
210 M (Fail-secure): Also known as the fail-lock or non-fail safe. When the electric current is applied to the strike, it will release the door. In this configuration, the strike would remain locked in a power failure. However the knob can still be used to open the door from the inside to allow access from the secure side. These units can be powered by alternating current, which will cause the unit to buzz, or DC power, which offers silent operation, except for a "click" while the unit releases. The device connections are different with the EM Lock where it only unlock when current is applied.
The 210MF or 210M Door Strike
The strike and monitoring contact (where it can be used as indicator for door open or close)
12VDC Power Supply Input terminal
Monitoring contact terminal
210 MF strike condition where no power supply applied
210 M strike condition where no power supply applied
210 M (Fail-secure) Connection with FingerTec device