The following are the LED codes for the CO200

Condition Lights
Access denied
2 red blinks
Access denied, user outside time zone
4 red blinks
Factory default reset
One-second solid green with one-second beep
Waiting for PIN
5 left red with right green blinks, then solid right green
Low battery indicator, AA batteries
9 left red blinks
Low battery indicator, coin cell battery
9 right red blinks
Momentary unsecured access
1 green blink, then one red blink on relock
USB active with no physical connection
Left green blinking
An incompatible reader is on the lock
2 red blinks and 2 beeps with each card or key press, or 5 red blinks and 5 beeps on power-up