The RN-41-SM is a submersible waterproof module used in ROVs (remotely operated underwater vehicles). It is based on the RN-41 Bluetooth Radio Module from Roving Networks and is designed for use in underwater environments. This module has low current consumption, small form factor, and is capable of operating at depths up to over 100 meters. It enables wireless communication with a computer and is used for data transmission, vehicle control, and monitoring.