. Key Features When temperature and humidity value exceed selectable limits the event is logged in the event history.The EMP monitors temperature and humidity information of any environment that you want to protect your critical equipment.The EMP measures temperatures from 0°C to 70°C with an accuracy of ±2°C. • The EMP measures relative humidity from 10% to 90% with an accuracy of ±5%.It can be located away from the ePDU with a CAT5 network cable up to 20 m long.The hot-swap feature simplifies installation by enabling you to install the probe safely without turning off power to the ePDU/UPS or to the loads that are connected to it.The EMP monitors the status of the two user-provided contact devices.Temperature humidity and contact closure status can be displayed through a web browser a serial interface or an onboard LCD interface (ePDU only).User-selectable alarm thresholds enable you to define acceptable temperature or humidity limits.Email notification through Simple Mail Transfer Protocol (SMTP) using email client software when acceptable alarm limits are exceeded or contact status changes.Changes in external contact status are logged in the ePDU event history log. The optional environmental monitoring probe (EMP) is a connectivity device that enables you to collect temperature and humidity readings and monitor the environmental data remotely. You can also collect and retrieve the status of two contact devices..