We recommend this kind of remote controller-dc rf remote controller kit with timer (S1D-DC12 & C-1), which operates in the 315433 MHz frequency and is actuated by DC 6V, 9V, 12V and 24V. There is an adjustable resistor being installed in it. Working time of this remote controller can be adjustable between 2-40 seconds by using a screwdriver to twist the top of resistor. It can be applied to controlling lights, motors, fans, electrically operated doors locks windowsblinds cars or other appliances with voltage AC 110~240V or DC 0-28V.