... , including DCV/ACV,DCI/ACI,Ω2W/Ω4W,Frequency/period,Diode Test /Continuity,dB/dBm, cover all basic measurement needs.Many new ... system density and volume.TH1961 bench multimeter adopts special input over load protect circuit which can stand 1500V voltage between input and ... , with ALARM at HI/LO (selectable)Communication interface RS232C, SCPI bench Digital Multimeter TH1961