The Matrix Fitness 1000443390 Elliptical Heart Sensor Set Grip Left CB9 helps monitor workout heart rate through the designated left handle grip on compatible elliptical equipment. Designed to work with the machine's heart rate monitoring system, this sensor set detects hand contact and supports displaying heart rate information during exercise. It is a practical replacement for worn,... https://www.wholetoolbox.com/matrix-fitness-1000443390-elliptical-heart-sensor-set-grip-left-cb9/1000443390.html