| Comet S7841 Specifications | 
        
        
            | Technical Parameters | 
            Value | 
        
        
            | Measured Value | 
            Two-State Events | 
        
        
            | Operating temperature range | 
            -30 to +70°C | 
        
        
            | Number of binary inputs | 
            4 | 
        
        
            | Signal character at binary input | 
            from potential-less contact or two-state voltage signal - selection by the switch | 
        
        
            | Terminal of input signals | 
            removeable WAGO 734, maximum cross section of leads 1,5mm2 | 
        
        
            | Real time clock | 
            year, leap year, month, day, hour, minute, second | 
        
        
            | LCD display refresh | 
            each 5 s | 
        
        
            | Total memory capacity | 
            16245 changes of input signal in noncyclic logging mode 
            15778 changes of input signal in cyclic logging mode | 
        
        
            | Data logging modes | 
            noncyclic - data logging stops after filling the memory 
            cyclic - after filling memory oldest data is overwritten by new | 
        
        
            | Power | 
            Lithium battery 3,6V, size AA | 
        
        
            | Typical battery life | 
            4 years | 
        
        
            | IP protection | 
            IP20 | 
        
        
            | Dimensions without connectors | 
            93x64x29mm | 
        
        
            | Weight including battery | 
            approximately 130g | 
        
        
            | Warranty | 
            3 year |