. Key Features When temperature & humidity value exceed selectable limits the event is logged in the event history. The EMP monitors temperature & 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 e PDU 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 e PDU/UPS or to the loads that are connected to it. The EMP monitors the status of the two user-provided contact devices. Temperature humidity & contact closure status can be displayed through a web browser a serial interface or an onboard LCD interface (e PDU 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 e PDU event history log. The optional environmental monitoring probe (EMP) is a connectivity device that enables you to collect temperature & humidity readings & monitor the environmental data remotely. You can also collect & retrieve the status of two contact devices..