... fineness 5 x 10-5; Voltage, current output capacity 20 VA; Voltage, current adjustment for accuracy ± (0. ... fineness 5 x 10-5; Voltage output capacity 20 W; Current output capacity of 30 W; ... Ω, 200 ~ 400 Ω, 0 ~ 2 K Ω, 2 K Ω ~ 4 K Ω, 0 ~ 20 K Ω, 20 K Ω ~ 40 K Ω, 0 ~ 200 K Ω, 200 K Ω ~ 400 K Ω, 0 ~ 2 M Ω, 2 M ... frequency 50 HZ± 5%. Use of the environmenttemperature 20 °C± 10 °C, relative humidity≤85% RH ...