20 D1
+
PERSONAL DUST MONITOR
XD1+_User manual_P5650.1600_Rev A
The following information details the operational functionality of the D1
+
device. With simplicity in
mind, the D1
+
has been designed around the use of a single press switch and three illumination
icons to indicate on-device warnings, battery levels and operating modes.
User interface icon display
The D1
+
has a simple tri-icon graphical
interface which is used to communicate on-
device warnings, sampling modes, battery
indication and a device heartbeat.
Audio alarm
The built-in alarm sounder provides audio
warnings at 85 db in conjunction with the
illuminated icon interface to alert users to on-
device alarm threshold breaches.
Power/function button
A single power and function button is used
on the D1
+
for device power on/o, alarm
acknowledgement and device self-test.
11. DEVICE FUNCTIONALITY
Hold
Press
Release
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