UT673E Solar PV Module Power Tester: High-Power Open-Circuit Voltage and Short-Circuit Current Testing Functional Applications: Testing the maximum point power, maximum point voltage, and maximum point current of solar panels Reference Conditions: 23°C ± 5°C, below 75% RH Maximum Power: Pmax 2000 W Power Resolution: 0.1 W Reverse Input Protection: Yes Power Supply: 3 AAA 1.5 V batteries Backlight: Yes Meter Dimensions: Length × Width × Height: 142.5 mm × 76 mm × 32 mm Test Leads: Dedicated MC4 test leads; comes standard with a dedicated MC4 wrench Meter Weight: 230 g Battery Voltage: Displays a low battery symbol when battery voltage is low Auto Shutdown: Approximately 10 minutes Data Hold: Yes Storage Temperature and Humidity: -10°C to 60°C, <80% RH