RF module. RF Module with ruler for size reference. An RF module (radio frequency module) is a (usually) small electronic device used to transmit and/or receive radio signals between two devices. In an embedded system it is often desirable to communicate with another device wirelessly.
A typical prosthetic limb costs anywhere between $15,000 and $90,000, depending on the type of limb desired by the patient. With medical insurance, a patient will typically pay 10%â50% of the total cost of a prosthetic limb, while the insurance company will cover the rest of the cost.
1 At D. Danz & Sons, a company that creates custom ocular prosthetics, the cost of an ocular prosthetic typically costs $2,500-$8,300.  On a forum at LostEye.com, U.S. patients report costs of $2,500-$6,000 for a custom artificial eye.