Attributes . In the characteristics testing at shipment, 0?C ?0.2?C was achieved (test performance report attached); Follow-up performance at the sudden changes in room temperature; A metal of the same thermocouple is used in the input unit, and the reference junction has been integrated with the reference junction compensator; The waterproof performance equivalent to IPX5 (HD-1100, 1200, 1400); High quality and reliability which are special features of products manufactured in Japan; Large LCD display which is easy to view, and user friendly single function keys. Thanks to low power consumption, 300 hours continuous use (in HD-1200), in combination with a wide variety of sensors is possible. Memory function (HD-1500). Conformity to CE marking . Names