The Metrel A1384 is a Photovoltaic safety probe. The device can safely disconnect a PV installation from the grid in case of a permanent short circuit. The product of the Metrel Company is very durable and sturdy. The safety probe has a long life which is required in a solar power system. It is an optional accessory for Photovoltaic Tester. The product is a must if anyone is working on a Photovoltaic setup, and it can save you from a very dangerous situation. Product Features: Brand: Metrel Model: A1384 Product: Optional Accessories for Photovoltaic Tester Type: PV Safety Probe