It was much easier to replace the existing four wire smoke detector with a new two wire smoke detector, than it would have been to replace the entire alarm control panel. As soon as we unhooked the four wire smoke detector, everything worked perfectly. Therefore, because the smoke detectors were wired to the 'SMOKE +' terminal, the system was not allowing the change of voltage on the armed state. It turns out, that with four wire smoke attached to the NX-8, the auxiliary outputs are used for resetting the smoke detectors after an alarm. Just when we thought GE and Telular were going to give up and say that the service wouldn't work with this customer's panel, I asked whether or not the four wire smoke detector that was attached to the panel could be complicating things. We also knew the auxiliary output was providing the proper voltage when the TG-1 was unhooked, but still the interactive service did not work. We knew we had our NX-8 zone wired and programmed correctly because shorting the zone, with the TG-1 unhooked, resulted in an arm or disarm at the panel. However, even after we figured out this programming deviation, the app was still not controlling the system. The TG-1 Express needs these voltages in these states for the Telguard Interactive service to work properly. Since the interactive account was showing the opposite state, changing this output programming allowed the voltage across the 'AUXOUT' and auxiliary power 'COM' terminals to show a positive twelve volts when the NX-8 was disarmed and zero volts when the system was armed. After some troubleshooting and voltage metering, we determined that the NX-8 auxiliary output should actually be setup to follow the disarmed state instead of the recommended armed state. However, it wasn't until we were able to do a conference call with a lead Telguard technician and a very knowledgeable GE technician, that we got the system working properly. Both companies were very helpful in giving us information on how their device should operate. We spoke to GE and Telguard technical support separately many times to try and solve the problem. Once it armed, the app would fail every time we tried to disarm. When we tried to disarm the system from the Telguard account, the system armed. When we followed the instructions for the NX-6 Telguard Interactive setup, the Telguard account showed the system was armed, when it was disarmed. With this setup, the TG-1 Express allows you to use a web based account to remotely control (arm/disarm) your NX-8 control panel.

The TG-1 acts as a normally open relay that closes for one second and then opens. Of course, you also need a Telco connection from the RJ-45 connector on the TG-1 Express to the four Tip and Ring terminals on the GE NX-8 alarm control panel.Īfter making the proper connections, the Telguard Interactive installation guide walks you through programming the connected zone as a keyswitch zone and programming the connected auxiliary output to follow the armed state. Finally, you need to connect the 'Trp' terminal on the TG-1 to one of the 'AUXOUT' terminals on the NX-8. The zone used must be one of the eight on-board wired zones and you cannot use an expansion zone for this connection. Then, you need to wire the two 'STC' terminals on the TG-1 to an open zone on the control panel.

With the NX-8, you need to connect the 'Gnd' terminal on the TG-1 to the auxiliary power 'COM' terminal on the NX-8 and the 'Pwr' terminal on the TG-1 to the 'AUX +' terminal on the NX-8. Telguard Interactive service works by wiring the TG-1 Express universal cellular alarm communicator to the alarm control panel. While Telular does a good job of providing detailed installation instructions for integrating their cellular alarm communicators with most alarm control panels, the instructions for the newer NX-6 control panel were not working for this older NX-8 and therefore, the system wasn't acting as it should.

Fresh off the heels of our Telular partnership, we had an interesting situation come up when trying to provide the Telguard Interactive service to one of our new customers that had an existing GE NetworX NX-8 control panel.

Networx nx8 user manual