... thumb switch, 6 digit LED display;3). Four type input modes, 18 type output modes;4). With rate setting, with two ... ≥100MΩDielectric strength2KV/ 0.5mA (one minute)Anti-interferencepower ±2KV, input: ± 400VVibration resistance10 ~ 55Hz; 0.75mmWorking environmentTemperature: 0 ~ 50° ... freeze); Humidity: 35 ~ 85%RHInput signalSuqare wave, sine wave, input signal: 0 ≤ L ≤2V, 5V ≤H ≤30VInput impedance>10K ...