Here's the perfect, low-cost way to introduce 2.4 to your arsenal. This short-range combo is great for park flying and indoor flying models, or robots that will be operated within 100 yards line of site.
This is the waterproof inspection LT2 Robot. It has flipper arms to help it climb obstacles and for better maneuverability. It is capable of wireless or tethered control. The tethered option includes a fiber-optic cable spool up to 1km long.
This is a small tracked robot equipped with 42mm motors, a motor controller, and Spektrum remote control. This is a customized prebuilt version of TP-230-042 with added track brackets.