LM Technologies LM400 At Command Manual page 25

the passkey. MITM protection must be enabled to request passkey from the host as well as
prompt mobile phone user for confirmation.
2.10.2.4 No Display No keyboard
No message will be sent to host and all paring requests will be rejected from any remote
BT2.1 device if local host or remote device has enabled MITM protection.
If MITM protection is disabled in local as well as remote BT2.1 device, automatic pairing (Just
Works) takes place irrespective of remote BT2.1 device type.
For example: On pairing request from mobile phone, automatic pairing takes place if MITM
protection is disabled. The mobile phone user will be prompted to confirm automatic pairing
with the local device.
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AT Command Manual
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