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Radio Frequency

Cyclops systems have been produced to receive radio code transmissions. Over the years the frequencies have changed. Pictured below is the two most common and similar receiver boards used by our remote alarms and immobilisers.

The frequencies of the receivers are determined by component values, as the PCB layout does not change with frequency. All capacitors are unmarked, making it impossible to determine values.

The main identifying feature of our receivers is The copper inductor coil on the edge of the PCB.

Image of 304MHz and 433MHz receiver boards