The TX-90 is the latest design Transponder remote for the Dynatron 7 Series (D7400, D7600 & D7800) / Cyclops P755, P775, P785 . The remote is powered by 2 CR2016 Coin shaped batteries.
How does the Dynatron Transponder Remote work?
The 7 Series has a coil which is installed by the ignition barrel, when the door of the vehicle is opened the transponder coil energizes for 30 seconds. If the 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-90 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-9o 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.
The TX-90 uses 2 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 Transponder Remote
Note: Will also work with the 3 Series but without the transponder function. Likewise the TX-111 Remote will work with the 7 Series but again will lose the transponder feature.
Replaces old TX-11 Blue Remote