This new logger simultaneously makes it possible to monitor and record up to 3 changes of state plus an event The three ways of change of state and the way of event record the moment of closings or the openings of a contact by external probes connected on engines, doors, etc… The unloading of the data is easy and fast thanks to interface USB by using the Hoboware software which allows statistical calculations such as the percentage of time of opening or closing and the total number of events The way event can be used with a pluviometer to record precipitations The 3 ways changes of state and the way event can supervise to 4 zones simultaneously Compatible with all the standard relays and contacts Patented technology Crush replaceable CR-2032 by the user Lifespan of the pile: 1 year for a typical use Non-volatile memory (measurements are preserved in the event of discharged pile) The level of load of the pile is selected with launching Possibility of recording the level of the pile like an independent way Ways State (3) - External Input contact: passive relay - switch or contact - minimum time of the state: 1 second Event (1) - External Input contact: passive relay - switch or contact - minimum time of the state: 1 second Operating conditions: - Temperature: -20 to +70 °C -0 to +50 °C during the communication with a computer - Hygroscopy: 0 to 95% (non-condensed) Memory size: 64 K; 26000 to 43000 memorable values according to the interval enters the changes of state or the events Length cables maximum: 32 m; 64 m by using only the State ways Accuracy of the clock: ±1 minute/month with +25 °C Dimensions (mm): 58 X 74 X 22 Weight : 50 G