This compact board converts hobby radio control pulses to digital on/off signals for use in RC switch and simple RC adapter applications. One output indicates the presence of a valid RC signal (10-100 Hz pulse rate, 0.5-2.5 ms pulse width), and the other output indicates whether the pulse width is above or below the 1.6 ms threshold (with ±0.1 ms hysteresis). An integrated medium, low-side MOSFET can be used to drive moderate loads (up to around 15 A), such as a relay, when the switch is on.
More data:
http://www.pololu.com/catalog/product/1211"