![background image](http://html1.mh-extra.com/html/dahua-technology/dhi-ard821-w2/dhi-ard821-w2_user-manual_3197368009.webp)
User’s Manual
4
3 Appearance
Figure 3-1 Appearance
Table 3-1 Structure
No.
Name
Description
1
Button
●
Press and hold the button for 8 seconds, and then the
system enters pairing mode.
◇
Flashes green quickly: Pairing.
◇
Solid green for 2 seconds: Pairing successful.
◇
Slowly flashes green for 3 seconds: Pairing failed.
●
On the normal status, press the button once, and then
the button sends alarm messages to the hub.
◇
Flashes green once: Sending messages to the hub.
◇
Flashes green for 0.5 seconds: Successfully sent
messages to the hub.
◇
Flashes red for 0.5 seconds: Failed to send messages
to the hub.
●
In accidental press protection mode, press and hold the
button for 2 seconds, or double-press it, and then alarm
messages will be sent to the hub.
The indicator status in accidental press protection mode
is the same as that of the normal status.
Make sure that you have enabled the accidental press
protection function on the DMSS app.
2
Indicator