... digits counter3. Relay output have four output models(R,N,C,F).4. Backup data for power fail,the data ... less than 2VMax. input50VStepDescend edge.Relay outputOutput mode.R,N,C,FOutput cycle0-99.9sContact burden250VAC/3APower supplyAC90V-260V (50Hz).Anti ... -interferenceIEC801 3GAmbinet temperature0 to +50°CStorage temperature-20°C to +70°C.Withstand impedanceMin100MΩCounting speed (5 class forset)20CPS ...