PowerBox Systems are a German company that started off making battery backup systems for large scale gliders, along with signal boosters to cope with the long servo lead lengths found in large gliders and aerobatic models. During the subsequent years they started to produce much more complicated battery backup systems, switches, regulators, dual power and Rx systems, as well as a whole host of accessories such as power and extension leads. There is now a PowerBox product that will suit almost all modellers and models. Their latest creation is a 3-axis gyro system, which is the subject of this review.
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