The smallest combined electronic switch / linear regulator system for modelling ! Electronic switch, operated using a sensor button Linear IC-controlled voltage regulator Multi-colour LED for monitoring Li-Po battery voltage Low voltage detection Input voltage 8.40 Volts ( 2 Li- Po cells ) Output voltage 5.50 Volts ( equates to charged 4-cell NC battery ) Regulator capacity approx. 3 -5 A ( dependent upon available cooling ) Weight only 15 grammes Applications: Small to medium-sized model aircraft with up to 6 servos F3A models Model gliders with up to 10 servos ( or more, according to servo size ) Helicopters with up to 1.5 m rotor diameter Electric helicopters RC model cars Model boats Ignition systems designed for 4-cell NC battery operation Using the switch: Hold the sensor button pressed in for about 0.5 seconds, and the LED glows orange. Now press the button a second button, and the LED turns green. The switch is now ON, and the circuit is ready for immediate use. To switch off, hold the sensor button pressed in again for about 0.5 seconds, until the LED glows orange. Now press it briefly a second time, and the LED goes out. The switch is now OFF. When you initially connect the battery, the switch is always switched on immediately; the LED glows green.