Metrel A1378 is a PV remote unit for the measurement and logging of irradiance and temperature values. The product is an important accessory for a Photovoltaic Tester. The device has an LCD screen with a backlight. The instrument has an automatic shut-off feature if it is not used for more than 15 minutes. A Red button on the instrument starts and ends the test, and three inputs can be given. They include the irradiance, ambient temperature and cell temperature. The device doesn't have USB support. The instrument also has a vertical stand that enables the user to keep it standing and regain both hands' use. Product Features: Brand: Metrel Model: A1378 Product: Optional Accessories for Photovoltaic Tester Type: Eurotest PV Remote Accuracy: ± (5% +5 digits) Resolution: 1W/m2