A self-powered current loop transmitter transmits a process variable over a wireless link, deriving operating power from the current which drives the loop. The fixed blade has a primary shearing surface that has a convex or radiused cutting edge, a convex or radiused bevel, and a convex or radiused body feature. If the context correlates to an existing message transfer session, the message is ultimately assigned to a message transfer session. A monitor video interface mates with a video interface of a motherboard of a host computer. A flexible member electrically connects the internal connector to the electrical circuit. The first processor can be, used to create the template overhead section before passing the template information to the second processor where it can be used in forming the real-time data packets.