A multi-function environment meter that combines the functions of a sound level meter, light meter, humidity meter and temperature meter. Typical sound applications include checking acoustics of recording studios, auditoriums and professional hi-fi installations. The light and humidity meters are ideal for video photographers, greenhouse and hydroponic setups, etc. Others who should find this meter essential include interior designers, factory and office managers, record and archive keepers, schools, hospitals, laboratories and, of course, universities. Sound level meter Light level meter Indoor temperature and humidity measurement Non contact voltage Display: 4000 count Security class: Cat III 300V Basic DCV accuracy: 1% Temperature: -20 degrees Celsius to 750 degrees Celsius (±1.2%) Ave/RMS: Ave Input impedance: 10M Special features: Lux, SPL, Humidity Capacitance Ranges : 50.0nF, 500.0nF, 5.0µF, 50.0µF, 100.0µF Capacitance Accuracy : 3.5% Continuity indicator : Needle AC Current Ranges : 400.0µA, 4.0mA, 40.0mA, 400.0mA, 10.0A AC Current Accuracy : 1.0% DC Current Ranges : 400.0µA, 4.0mA, 40.0mA, 400.0mA, 10.0A DC Current Accuracy : 1.0% Frequency Ranges : 5.0Hz, 50.0Hz, 500.0Hz, 5.0kHz, 500.0kHz, 10.0MHz Frequency Accuracy : 1.5% Absolute Humidity : true Resistance Ranges : 400.0?, 4.0k?, 40.0k?, 400.0k?, 4.0M?, 40.0M? Resistance Accuracy : 0.8% Measures in Celcius : true Outdoor / Exterior Scale : -20.000000 degrees Celsius, 750.0 degrees Celsius Celcius Accuracy : 1.2% AC Voltage Ranges : 400.0mV, 4.0V, 40.0V, 100.0V, 250.0V AC Voltage Accuracy : 1.2% DC Voltage Ranges : 400.0mV, 4.0V, 40.0V, 100.0V, 250.0V DC Voltage Accuracy : 0.5% Data Hold : true Relative Measure : true Safety Rating Cat : Cat III Safety Rating Max Volt : 300.0V Count / Maximum Reading : 4000.0 count Autorange : true Length : 170.0mm Width : 75.0mm Depth : 48.0mm Battery type : 9V Battery Quantity : 1.0pc Are batteries included : true Batteries can be replaced : true Battery compartment location : Internal / In-built How is battery compartment kept closed : Clip and Screw Probe rating voltage : 300.0V Probe safety rating : Cat III Meter Input Impedence : 10.0? Input Protection Fuse : 500.0mA, 10.0mA Measures diode : true Casing : Plastic