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We've had some recent requests to offer completely assembled PWM units so we found a supplier to build these nice units. They are built using the Heavy Duty 30 AMP PWM like pictured above and come with a fan, switch, and dial controls for adjusting the current AND frequency (Actual product may vary from picture). These are nice units and come with ventilation slots cut into the sides to allow air to be drawn up and over the cooling heat sinks. Holes are pre-drilled in the back for the wires and connectors to attach to the board inside.
Si quieres comprar este producto puedes preguntar a otros usuarios que lo hayan comprado anteriormente, igualmente puedes informarte del precio de otras tiendas y de las calidad del producto