Signatrol produce small button size dataloggers that with, suitable interface, can be downloaded into a pc, This will give record of the temperature reading over a considerable period of time. The Signatrol data loggers can be used to mointor sensitive deliveries for lots of items, they have been used on trucks containing flowers, to monitor the temperature and temperature fluctuations, all through their journies, from source to delivery point. Proving the cooling in the vehicle has been functioning all the time. The application list is endless. Frozen food deliveries, Pharmacutical companies, The privce of Signatrol product means they are virtually disposeable. We also have Escort loggers, many in use by the Pharmacutical Industry, capable of logging temperature and humidity, in some cases, for long periods. We can supply the interfaces for downloading to a PC and the software required. Some of the Escort loggers have external probes also.. We can also supply loggers from ETI . Please phone for details, as we are updating this section and adding products.We can calibrate, all these,loggers, in our environmetntal chamber and provide Traceability to National Standards.