Napco Security Technologies GEM-DXK3 User Manual
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S Y S T E M T R O U B L E E R R O R C O D E S
Trouble
Indication
System Trouble
Condition
Action
E-04-NN
Wireless Transmitter 
Supervisory Failure 
A problem has been detected with a wireless transmitter. Call installing company for service.
E-05-NN
Wireless Transmitter 
Low Battery 
The battery in a wireless transmitter is low and should be replaced. This transmitter is on the zone 
corresponding to the number NN. The replacement battery for the GEM-TRANS2 door/window transmitter, 
GEM-PIR motion detector and GEM-GB glass break detector is the Duracell DL123A 3 volt lithium. (2 
required for the GEM-PIR and GEM-GB.) The replacement battery for the GEM-SMK is the Duracell 
MN1604 9 Volt Alkaline(2 required ). The GEM-DT Dual Technology Sensor requires 4 C cell alkaline 
batteries. 
 
Warning: Replace batteries only with the same type as specified above. Use of another battery may present 
a risk of fire or explosion. Do not recharge or disassemble battery, or dispose of in fire. 
E-06-NN
Receiver Response 
Failure 
Call installing company for service.
E-07-00
Download Failure
Call installing company for service.
E-08
Telephone Line Cut
The telephone line has failed. If telephone service has been temporarily interrupted, the trouble will clear 
automatically when it is restored. Otherwise, call installing company for service. 
E-09-00
System Cold Start
E-10-NN
Keypad Response 
Failure 
Call installing company for service.
