Power Supply Specification
The power supply is capable of supplying a maximum of 3 Amps. This should be sufficient to
power the Easikey 250 controller, one or two readers and one or two electric locks, and
provide charging current for the battery.
Use the following table to ensure you do not overload the power supply:
Item Current (mA)
Easikey 250 Controller 190
Reader 1 90
Reader 2 90
Lock 1
Lock 2
Charging Current 500
Safety Margin 500
Total
The total current should not exceed 3A (3000mA). This leaves approximately 1600mA
available for supplying the locks on a two door system.
Checking the System — Boxed Easikey 250 / Boxed Easikey 250 with Cutout
1. With the mains supply connected, power up the system with no locks or readers
connected.
2. Using a multimeter set to DC volts, measure the voltage across the P1 and P2
terminals of the Easikey 250 controller.
The voltage should read between 13.5 and 13.8v DC.
2. If you are using battery backup, power up with the battery (or batteries)
connected and measure the voltage between P1 and P2.
This should still be between 13.5 and 13.8v DC.
3. Disconnect the mains supply and measure the voltage between P1 and P2.
The voltage should now be approximately 12.5v DC from a fully charged battery.
4. Continue with the procedure described in the section on Checking the System.
5. Finally, repeat the checks described above but with a fully working system
complete with locks and readers.
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