The RN41XV and RN42XV are small form factor， lowpower Bluetooth radio modules offering plug-in compatibility for the widely used 2 x 10 （2-mm） socket typically used by 802.15.4 radio modules. Based on the popular 2 x 10 （2-mm） socket footprint often found in embedded applications， the Roving Networks’ RN41XV and RN42XV modules provide Bluetooth connectivity in legacy and existing designs that may have been based upon the 802.15.4 standard. The RN41XV Class 1 Bluetooth module is based on the RN41， and the RN42XV Class 2 Bluetooth module is based on the RN42. These modules are simple to design in and are fully certified， making them a complete embedded Bluetooth solution. The RN42 is functionally compatible with the RN41. The Class 1 RN41 module has a range up to 100 meters. The Class 2 RN42 module has a range up to 20 meters.