This is a Female RS232 to TTL serial converter serial cable. The Type I cable converts a serial signal to TTL with connections for Tx, Rx, +3V/+5V and ground. The TTL connector is a 4-pin Fritcion Lock with a 0.100" pitch. This item replaces MCU-016-172
This set of wheelchair motors makes great heavy duty robot motors. One left motor and one right motor. They are right angle gear drives have been modified to include encoders. They are 24VDC and the operating speed is 120 RPM.