The advanced demo trap was an improved version of the standard GLAdemo trap, developed by General Rodall Juhziz, also being his standard issue replacement. The Advanced Demo Trap functioned identically to its predecessor, but was cheaper, faster to assemble, and packed even more explosive power. You can tell an Advanced version from its predecessor by noticing that there are more "sticks of dynamite" wrapped around the drum. As with the regular Demo Trap, certain USA and China vehicles were equipped with scanners that could detect these bombs from a distance, allowing for their safe removal.
Abilities
Proximity Fuse - Explode when enemy gets near.
Manual Control - Explode on the general's command.
Advanced Demo Trap are already quite powerful by itself, but the developers planned to have them upgradable with High Explosive Bombs, which would double the damage.