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MMS-21C User Manual
Page 27
Electrostatic discharge (ESD) can cause serious damage to electronic components,
including the MMS-21C. Dry climates are especially susceptible to ESD. It is therefore
critical that whenever the MMS-21C is opened and any of the electrical components are
handled, the following anti-static precautions are strictly adhered to.

Wear an anti-static wristband : Wearing a simple anti-static wristband can
help to prevent ESD from damaging any electrical component.

Self-grounding : Before handling any electrical component, touch any
grounded conducting material. During the time the electrical component is
handled, frequently touch any conducting materials that are connected to the
ground.

Use an anti-static pad : When configuring or working with an electrical
component, place it on an anti-static pad. This reduces the possibility of ESD
damage.

Only handle the edges of the electrical component : When handling the
electrical component, hold the electrical component by its edges.
3.2 Installation Precautions
When installing the power module, please follow the precautions listed below:

Power turned off : When installing the MMS-21C, make sure the power is off.
Failing to turn off the power may cause severe injury to the body and/or
damage to the system.

Certified Engineers : Only certified engineers should install and modify
onboard functionalities.

Grounding : The MMS-21C should be properly grounded. The voltage feeds
must not be overloaded. Adjust the cabling and provide external overcharge
protection per the electrical values indicated in the user manual.