The Isuzu D-Max is another popular Ute which I’ve worked on recently.
It comes with factory keyless entry and immobiliser as standard but lacks an alarm which is a must-have if you are a tradesman and keep tools in it.
Isuzu D-Max Alarm
Both the Cobra AB3868 and the Cobra AK4615 are excellent options for the D-Max. Both work flawlessly with the factory remote. Ultrasonic movement sensors come as standard with either system to cover the front cabin.
A PIR sensor is recommended if you have a canopy with contents that need protecting. Or there is the option of using a Reed switch if you have a hard lid for the tray area.

D-Max
Here are some shots of how the Cobra looks in the D-Max

Cobra Ultrasonic Sensors look good in the D-Max

Cobra LED Over-ride switch in the D-Max