Profile: Byram Labs offers electrical testing and measurement equipment. Our products list comprises of current detectors, distance meters, generator boxes, oscilloscopes, sensors, thermometers and timers. The Extech DA50 telescoping AC current detector is suitable for use on shielded wires or conduit behind walls, metal circuit breakers or junction boxes. It is for non-contact detection of AC current from 200mA to 1000A. The Megger 550005B single-phase TTR is used for testing single phase power and distribution transformers. It is available in hand-cranked or line-operated models.