... 4. Sensitivity: 8V/mm YD420 Dual-axis Vibration Monitor Brief Introduction Main Function2.1 With two channels, each ... User can arbitrarily set by pushing any buttons in the front of the panel if two ... level alarm setting value is in the measuring range.2.4 With current output ... will circulating display “COL”,“COH”,“C1L”,“C1H”,“PPP” in turn, respectively indicate channel 1 alarm 1 value, ...