Testing the reader 23
c. Present a card to the reader. Observe that the reader 
behaves as described in the section 
“Indicators” on 
page 23
. 
d. Observe that the green LED turns on, indicating a 
valid access has been granted by the host.
e. Open the door. This verifies that the reader strike 
relay operates properly.
Indicators
A tri-color LED (red, yellow, and green), and a beeper are 
incorporated into the reader and operate as indicated in the 
following table:
Table 2. Indicators
Condition Standard indicators 
Power-on Self Test Red LED flashes, Yellow LED flashes, Green LED 
flashes
Reader Ready Yellow LED on continuously
Badge Read Yellow LED flashes briefly, 1 short beep
Valid Access Green LED on until door strike is deactivated
Loss of 
Communication 
(Supervised)
Red LED flashes slowly, every 2 seconds, 3 short 
beeps every 30 seconds
Tamper 
(Supervised mode)
Red LED flashes quickly (every 400 ms), 3 short beeps 
every 30 seconds
Alarm State Red LED may be turned on and off and the beeper 
may be sounded by the microcontroller, to indicate 
an alarm state. Consult the appropriate Access 
Control manual for details on this operation.