The Tech-Aero Designs FlexReg PLR5-DR2. dual, redundant regulator FlexReg combines two programmable failsafe switch regulators into one easy to use configuration. It protects your model from losing power to the receiver and servos due to the loss of any one critical component, such as a supply battery, the connecting wires or even one of the two regulators (although this is a very small possibility). Even if the ON/OFF switch contacts experience a failure, both of the regulators will continue to operate as long as they have battery power to operate from. The switch handles no current at all when the egulators are on and is not in the path for current delivery to the flight pack.