Environmental conditions

  

 Indoor use

 IP40 (MCUlite-2 and MCU5)
 IP31 (MCU W)

 Altitude

 Up to 2000 m

 Operating temperature

 +5 °C to +40 °C

 Storage temperature

 -25 °C to +70 °C (MCUlite-2 and MCU5)
 -20 °C to +60 °C (MCU W *)

 Relative humidity

 Relative humidity 80% maximum (non-condensing) for temperatures up to +31 °C.
 Linear decrease to 50% at +40 °C

 Pollution degree

 Pollution degree 2 as defined by BS EN 61010-1:2001 section 3.6.6.2.
 Normally only non-conductive pollution occurs. Occasionally, however, temporary conduction caused by condensation occurs.

* Storing the MCU W battery at high temperatures is not recommended because it prematurely ages the battery. The maximum recommended times for storage of the MCU W battery are:

  • 1 week at +60 °C
  • 1 month at +45 °C
  • 6 months at +40 °C
  • 12 months at +35 °C