Delta AC MAX Installation And Operation Manual page 13

(Optional) insert SIM card for cellular function
Mark drill holes
3. Remove the screw located at the middle cover by using a
Torx T20 screwdriver.
4. Remove the middle cover.
Insert the SIM card into the socket and ensure the connection
is well connected.
The EVSE is a stationary wall-mounted equipment. Using the
template to mark the screw locations for the mounting bracket
and cable holder (optional).
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