Universal sensor for the running machine Replace the sensor to make the running machine work properly and measure the speed accurately *When the engine of running machine stop and appear error codes after the treadmill motor starts for a few seconds, that means the sensor is fault Controller interface is 2 pin *2 Types: Round Head, Flat Head Note: We do our best to ensure all s and product images are as accurate as possible. Some color variations may occur between computer monitor. Your understanding will be highly appreciated! Package Included: 1x Treadmill Magnetic Sensor