Detection Level for On
                                
                                
                                    >168 V AC
                                
                             
                            
                                
                                    Detection Level for Off
                                
                                
                                    <68 V AC
                                
                             
                            
                                
                                    Wetting Current
                                
                                
                                    1 mA at 230 V AC
                                
                             
                            
                                
                                    Input Impedance
                                
                                
                                    240 kΩ (approximately)
                                
                             
                            
                                
                                    Maximum Input Voltage
                                
                                
                                    250 V AC
                                
                             
                            
                            
                                
                                    Isolation
                                
                                
                                    Each channel is optically isolated from the system at 250 V AC
                                
                             
                            
                                
                                    Configurable Channel Types
                                
                                
                                    Discrete Input - Dry contact or discrete state sensor changing <2 Hz, Pulse Count - Pulse train 0.1 Hz to 10 Hz
                                
                             
                            
                                
                                    CHARM Power req.
                                
                                
                                    12 mA max @ 24 V DC
                                
                             
                            
                                
                                    CHARM Heat Dissipation
                                
                                
                                    0.40 W
                                
                             
                            
                                
                                    Field Circuit Protection
                                
                                
                                    Recommend External Fuse at power source, Field wiring disconnect