Durite 12V Voltage Sensitive Relay - 140A. 12 volt 140 amp with red LED indicator. Allows split charging of second battery bank without discharging the primary/start battery. Relay makes at 13.3 volts and breaks at 12.8 volts. Additional information: A 5 second delay operates when the voltage falls below the cut-out voltage to prevent nuisance cut-out due to high intermittant loads on the battery. Supplied with self tapping screws and ring crimp terminal for ground lead. Dimensions: l 68 x w 54 x h 68mm. CE approved.