CT4504 is a photovoltaic breakout test lead set. It is a set of MC4 breakout to MC4 extension with 4 mm sheathed banana plug leads. The breakout feature provides a safe and reliable method of measuring the operating voltage (Vop) and operating current (Iop) of solar panels. With Cal Test’s new breakout leads, the user can easily insert a measurement instrument between photovoltaic modules. The double insulated PVC wire is both flexible and durable to enhance user convenience.