Hello,

Here is some information about the EA5801 product documentation. More details here.

Operation Environment

The operation environment must comply with ETSI EN 300 019-1-3.

Climate Requirements

Table 1 Requirements on temperature and humidity

Temperature	Relative Humidity
-40°C to +65°C The can start up at a lowest temperature of -25°C and run at -40°C.	5% to 95%
NOTE: The +65°C temperature refers to the highest temperature measured at the air intake vent of service subrack.

To improve product application reliability, it is recommended that a dedicated precise air-conditioner be installed in an equipment room and the temperature and relative humidity be controlled within the following ranges:

• Temperature range: 15°C to 30°C

• Relative humidity range: 40% to 75%

Do not install the air-conditioner above the equipment and ensure that the air exhaust vent of the air-conditioner is not directly towards the equipment. Keep the air-conditioner away from a window as possible to ensure that no moisture from the window is blown towards the equipment through the air-conditioner.

Hello, friend!

Check whether the board name is correct.

The H921MPCA board does not exist.

Different boards have different heat-resistant capabilities and the same board has different heat-resistant capabilities in the case of different backplanes. Generally, keep the temperature of all boards lower than 80°C.

Note:

Ensure the following ambient temperature for the device so that the device can run stably:

Long-term operating environment: –5°C to +45°C 

Short-term operating environment: –25°C to +55°C 

You can run the display temperature command to query the temperature of a specified board.

Thanks