Relay ID: R20 series supports two relays, user can configure
them respectively.
Relay Type: Default state means NC and COM are normally
closed, while Invert state means NC and COM are normally
opened.
Relay Delay: To configure the duration of opened relay. Over
the value, the relay would be closed again.
DTMF Option: To select digit of DTMF code, R20 series
supports maximum 4 digits DTMF code.
DTMF: To configure 1 digit DTMF code for remote unlock
Multiple DTMF: To configure multiple digits DTMF code for
remote unlock.
Relay Status: Low means that COM is connecting to NC while
High means that COM is connecting to NO .
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