SM206 Voltage Solar Panel Multimeter Set Solar Panel Tester Power Meter
Model: SM206. Shift: <±1.5% /year. Battery: 9V battery (NOT included). Resolution: 0.1W/m², 0.1Btu/(ft²-h). It supports maximum value hold function and data hold function. Range Error: ± (10%R+2dgts)R: readings.