Venom's new Fail Safe unit is now 30% smaller than the original, but with the same great features. Using the Venom Fail Safe is like having an insurance policy on your car, protecting it from signal failure and interference. The units' fail safe setting may be adjusted by the user to any desired servo position. The Venom Fail Safe plugs directly in line between your Receiver and Throttle Servo. The Fail Safe continually monitors the signal received by your radio and in the event of a glitch or lost communication, the Fail Safe automatically moves the servo to a position that you set, usually Full Brakes or Neutral. The Venom Fail Safe also has a built-in low voltage cut off at 4.2 volts. The unit has a small LED light that alerts you whether the Fail Safe kicked in because of low voltage (solid light) or signal failure (flashing light).