The EL-USB-1 is a USB temperature data logger with a measurement range of -35 to +80°C (-31 to +176°­­F). The data logger can store up to 16,382 readings and is supplied with a long-life replaceable lithium battery, allowing the unit to log data continually for at least one year (depending on logging rate and temperature). The status of EL-USB-1 is indicated by flashing red, green and orange LEDs. The data logger is protected against moisture to IP67 standard when the protective cap is fitted.