This IR remote controller has 4 directional buttons that are good for Robot or other applications.
NOTE!! The handheld remote has a small clear plastic piece in the battery compartment that must be removed to activate it. You can usually just pull it out.

17 keys
Based on NEC protocol;
CR2025 battery;
Remote control range: above 8m;
Wavelength: 940Nm;
Frequency: crystal oscillator: 455KHz;
IR carrier frequency: 38KHz