This is another receiver that can be used with our mini kits. This is a full range, 4 channel receiver. It is rock solid indoors or outdoors. It has programmable fail safe and True Digital Signal Processing (TDSP). It also has Transmitter Signal Recognition to "lock-on" to your transmitter signal in the event of interference. Works with any FM transmitter and will automatically sense positive shift or negative shift. Weighs in at 4 grams. Comes with the crystal of your choice. Please specify frequency in the notes of your order.