Polar Coded Transmitters are an integral part of the Polar heart rate monitors. Positioned on the chest, it measures heart rate per minute in real time. As Polar Transmitters are ECG accurate and 100% waterproof, they are the most effective exercise tools for measuring your heart rate.

The heart generates an electrical signal that can be measured on skin. Polar transmitter contains two electrodes to detect the electrical signal on your skin. The electrodes are mounted on a sealed transmitter that is attached to the chest with elastic belt. The Polar transmitter detects the voltage differential on the skin during every heart beat and sends the signal continuously and wirelessly using an electromagnetic field to the wrist receiver. This method is based on ultra low power consumption, which is guaranteed with the unique insertion molded electronics module and carefully designed and tested circuitry to pick up the electrical signal of the heart. Polar's unique patented one-piece molded construction makes the Polar chest transmitter the only 100% waterproof and most comfortable heart rate transmitter available.

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