The days of disposable data loggers are over with the new Keller DCX-ECO. The DCX-ECO is the only rechargeable autonomous level logger available. Plus, the DCX-ECO features a small, 18mm (0.71 inch) diameter stainless steel housing, making it ideal for a wide array of liquid level monitoring applications. It is also the only low cost level logger available in absolute, sealed, and vented versions. Many configurations are now in stock, ready for immediate shipment.