Model UT673PV Solar PV Tester A compact, fieldready PV meter designed for fast, accurate measurement and troubleshooting of solar panels and small arrays. The UT673PV runs directly from the panels so no batteries are required, and it includes MC4 test leads and meter sockets for quick connections. Key benefits Portable and simple: powered by the solar panel under test, no batteries or external power needed. Clear readout: large 52 by 66 mm LCD displays multiple results at once for faster diagnosis. Accurate performance data: measures power, voltage, and current across the practical ranges used in PV systems. Protection and reliability: built in protections reduce risk during field testing and protect the instrument from common faults. Flexible testing: manual and automatic MPPT test modes help evaluate panels and MPPT inputs under realistic conditions. Primary functions and performance Measured parameters: maximum power (Pmax), peak power voltage (Vmp), peak power current (Imp), open circuit voltage (Voc), short circuit current (Isc). Power range: 5 to 800 W; accuracy for Pmax: ±(1.0%+10). Voltage range: 12 to 60 V; measuring range 60 V; voltage accuracy: ±(1.5%+5). Current range: 0 to 35 A; measuring range 35 A; current accuracy: ±(1.5%+5). Short circuit and open circuit measurement ranges consistent with the above voltage and current limits. Large LCD: 52 by 66 mm for multivalue display. Safety and protection features Reverse polarity protection to prevent damage from incorrect connections. Overvoltage protection and overcurrent protection to guard the instrument and the panel under test. Over temperature protection and over power protection for reliable operation in real conditions. Connection protection to ensure safe use with MC4 leads and meter sockets. Additional features Manual and automatic MPPT test modes to evaluate maximum power point behavior. Data retention to preserve readings after testing. MC4 test line included for direct connection to most PV modules. Meter sockets for convenient, repeatable connections. No batteries required; device draws power from the panel being tested. Physical size: 22 x 18 x 6.5 (units as supplied). Color: red. Working temperature: 0 to 50 degrees. Typical use scenarios Preinstallation verification: confirm panel Pmax, Vmp, and Isc on the roof or in the yard before connecting to an inverter. Troubleshooting and maintenance: compare measured Vmp and Imp to expected values to find underperforming modules or string issues. MPPT input testing: use manual or automatic MPPT modes to check how an inverter or charge controller responds to realistic PV output. What this device is for Field technicians and installers who need a portable, accurate PV meter without the hassle of batteries. Commissioning and routine maintenance tasks where fast, multipleparameter readings reduce time on site. Any application that requires quick verification of panel output, MPPT behavior, or string performance. Model and identification Model: UT673PV Color: Red Specifications summary Maximum power measurement: 5 to 800 W, accuracy ±(1.0%+10) Voltage range: 12 to 60 V, accuracy ±(1.5%+5) Current range: 0 to 35 A, accuracy ±(1.5%+5) Display: large LCD 52 x 66 mm Power: solar panel powered, no batteries required Accessories: MC4 test line included Protections: reverse polarity, overvoltage, overcurrent, over temperature, over power Test modes: manual and automatic MPPT Data retention: supported Size: 22 x 18 x 6.5 Operating temperature: 0 to 50 degrees This UT673PV tester provides a balanced combination of portability, protection, and measurement capability for routine PV panel testing and diagnostics.