Polar Sulky Repeater for the heart rate monitor

The Polar Equine sulky repeater is used to extend the range of the transmitter from horse to rider. Generally it is used when the rider is on a sulky or a carriage, up to 2.4m away from the horse. The cable is attached to the sulky bar. It picks up the signal from the transmitter on the horse and relays it to the rider in the back.