User Guide

17
R20K
Admin Guide
for normally open contact. NC stands for normally closed contact.
Relay ID:R20K supports three relays. Users 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, R20K
supportmaximum to 4digits’ DTMF code.
DTMF&Multiple DTMF:To configureDTMF code for remote
unlocking.
Relay Status: While the relay is triggered, the statues will be
switched. When COM connects to NC, the status is low.
Note:Relay operate a switch and does not deliver power, so users
should prepare power adapter for external devices which connects
to relay.
Figure 3.7.1 Relay