Paperless Recorder-Data logger 1.3 channels/USB/Relay/RS485/ ... 24VDC auxiliary power supply for sensors and transmitters. Measuring data can be display in various types: bar graph, ... mini printer, to print history or real time data in digital or curve format. SpecificationAccuracy:±0.2 ... high quality and performance quality, paperless recorder, data logger, temperature recorder, paperless chart recorder.