... 1.digital display,full scale measurement,AC/DC signal output 2.fast/slow time ... tests.1.characteristics1) digital display, full scale measurement, AC/DC signal output2) fast and slow time weighting3) it ... /secAC signal outputMax effective value : 2vImpedance: 600ΩDc signal output0.3v-1.3v , changes according to ... 1MΩSound calibration TL 6020 ( 94dB,1000HZ)Power DC 7v-9v, with input hole for external power ...