Innovation First VEX robotics controller used. Works. uses VEXnet.

Western Robotics Audible Low Voltage Buzzer WRLBUZZ

Make:It Robotics 24' Line-Of-Sight IR Remote Control - 38kHz - 64 Command Max

Western Robotics Sentinel 2S Lipo RX Battery Monitor

3D Robotics 3DR 915mHz Transmitter (single)

Lipo Battery Voltage Tester Low Voltage Buzzer Alarm

Spektrum DX6i Transmitter Power Switch PCB and Buzzer - USED

Zero Zero Robotics Blastoff Controller ZR-100B OEM Genuine NEW / SEALED