THIS IS A USED THERMOMETER CHART RECODER. I DO NOT SEE ANY NAME OR INFO ON THIS UNIT AND THAT MAKES THIS HARD. I DID PLUG THIS IN AND IT POWERS ON. THE RECORDER IS INTACT AND INCLUDED. RECORDS TEMPERATURE AND THE TEMP PROBE IS INCLUDED. THIS WOULD HOLD A 6" CHART TO RECORD ON. OUTER CASE SHOWS WEAR. ASK OTHER QUESTIONS YOU HAVE OR ANY HELP YOU HAVE TO OFFER WOULD BE GREAT!!!