DataSure 4.0 Microhard Repeater. DataSure 4.0® starts with superior engineering, state-of-the-art technology and rugged durability. End Nodes, Repeater, and Gateways are built to perform reliably in almost any environment. Sturdy construction and heavy duty materials help them withstand the rigors of everyday use under demanding conditions. Each DataSure4.0® Repeater extends the system's range in increments of 100 feet (30 meters). They ensure system robustness by providing alternate signal paths in noisy environments.