The BW Technologies Replacement Oxygen Sensor is a highly effective replacement accessory. It has a sensor range of 0 to 30% with a 0.1% resolution. The replacement sensor is operational in a temperature range of -4 to 122 degrees Fahrenheit. It is compatible with some of the BW Technologies devices. BW Technologies replacement sensors are reliable and dependable and backed by solid performance. To ensure optimal compatibility, please consult your product specification sheet. Note: The SR-X2V is a direct replacement for the SR-X10 and SR-X10-C1 Sensors. It can be used in any instrument that uses those sensors. If you are replacing your O2 Sensor this is the best choice because it is an upgraded and more reliable design.