Designed for use with freight and passenger cars. Get started with the Kadee-RC Remote uncoupling system. The kit includes the necessary components and two couplers to convert one car (that is equipped with a factory Kadee #830 body mount platform) for remote uncoupling using the #906 coupler. The car can be set up to remotely operate a single coupler or both couplers simultaneously. The car must have adequate room inside to mount both the #11120 Standard Servo kit and the #11110 Receiver kit that are included Kadee(R) RC transmitter and receivers are FCC and IC compliant.WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov