Eti mk2 series thermadata temperature loggers and cradle eti 296 001 this temperature logger from eti is a versatile device that can be used both indoors and outdoors courtesy of the waterproof ergonomic case designed to meet ip6667 protection the data logger has a number of excellent features including the lcd and internal fixed sensor the logger also incorporates a red and green led the flashing green led indicates that the logger is active while the flashing red led indicates that