Heart Rate Monitor Receiver Only - Internal (ANT+)
This receiver is compatible with Series 4 version 2 (USB) monitors and must be connected internally. Chest belt is not included. Note: The Internal receiver is only compatible with S4 Version 2 and newer monitors. It is NOT compatible with the Series 4 (S4) Version 1 monitor.
The WaterRower Digital Heart Rate Internal Receiver (7042-ANT Int Receiver), uses state of the art ANT+ wireless technology to communicate with the Digital Chest Belt ANT+ Transmitter (required item not included, see Accessories).
Digital heart rate monitors have a transmission distance of 1.5 meters (as opposed to 1.0 meters for analog monitors, such as Polar). This allows the receiver to be placed inside the monitor removing the need for unsightly extension cables. Further, the use of digital technology improves accuracy and reliability.
ANT+ digital wireless technology greatly improves the range and accuracy of heart rate information and is becoming widely adopted by industry leaders such as Garmin, Suunto, Timex, etc.