The original TX-90T remote was easy to identify due to it’s LED colour which was blue.
It worked well but for some reason Australian alarm manufactures Dynamco (Cyclops) have decided to dabble and change the LED to green.
To make things even more interesting the remote now comes as both a transponder remote (TX-90T) and a none transponder version (TX-90), both with a green LED.
The intention of this post is to help clarify which remote is which!
The TX-90T is the transponder remote (Note the T at the end).
The new Green LED version of the TX-90T flickers when the button is held down whereas the Green LED on the TX-90 will come on solid.
The TX-90 is the none transponder version of the remote which replaces the TX-111 and the TX-11 Green LED remote
How does the Dynatron (TX90T) Transponder Remote work?
The 7 Series has a coil which is installed around the ignition barrel behind the plastic steering wheel cowl trim.
When the door of the vehicle is opened the transponder coil will energise for 30 seconds. If a coded transponder remote is placed in proximity of the coil then the immobiliser will disarm.
If more than 30 seconds has passed since the door was opened then the coil will turn off to preserve the vehicles battery. The coil will also energize whenever the ignition is turned on.
TX-90T replaces the TX-11 Blue remote found on older models of the 7 series which would often end up with a broken case or the rubber buttons would perish. Note: replacement cases are still available for the TX-11.
Having two TX-9oT remotes (or TX-11 blue remotes for that matter) side by side will cause the transponder to stop working, it will also cause the remote batteries to drain quickly. In other words it is not a good idea to have 2 sets of transponder remotes on the same key ring.
Both the TX-90 and TX-90T remote controls use two CR2016 batteries that typically last for 3 years, but this will vary on usage.
Take care not to remove the half crescent plastic that prevents the batteries shorting out and make sure that the + tab holds the batteries down firmly.
TX-90 Remote and TX-90T (Transponder Remote)
TX-90T (Transponder Remote) Compatible Alarms:
TX-90T RRP: $95.00
Historic 7 Series Remote Controls
- TX-11 Blue LED 1997-2007
- TX-90T Blue LED 2007-2016
- TX90T Green LED 2017 >
TX-90 Compatible Alarms:
TX-90 RRP: $85.00
Historic 3 Series Remote Controls
- TX-11 Green LED 1997-2007
- TX-111 2007-2016
- TX-90 2017-
Replacement Case (fits all TX-90 and TX90T remote controls)
TX-111 case also available
What to do if your Dynaton/Cyclops remote stops working?
All of the alarms that these systems work with will immobilise the engine 40 seconds after turning the ignition off. If your remote fails and you don’t have a spare one and have already replaced the remote batteries then you’ll need the alarms over-ride pin number.