This manual introduces the usage of logviewTH temperature and humidity recorder. The recorder, which is made of stainless steel, can record temperatures ranging from -50℃ to +200℃ (TP-1000)/-55℃ to +125℃ (TP-2000). It is widely used in various fields such as cold storage, food preservation, frozen product transportation monitoring, medical, pharmaceutical, agriculture, beer production, marine and river research, sterilization industry, warehouse temperature monitoring, environment monitoring, process temperature monitoring, air conditioning monitoring, etc.