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ations where disassembly is difficult, be sure to com-
pletely wrap the monitor to prevent paint and dust
from entering the monitor.
5. This product should avoid being dropped or hit,
which may cause the light beam deviation in the
sensor chamber, resulting in deviation of CO2 mea-
surement; it should avoid the long-term exposure of
the product to the high concentration of total
organic volatile gas, which may cause the sensor
poisoning to be unrecoverable. For example, the
concentration is greater than several times the
TVOC range in the monitor.
6. When the temperature of the monitor environment
changes greatly, for example, if the product has just
been received during the cold weather, it should be
placed indoors for 8 hours before being powered on.
Or move from the air conditioned room to the non-
air-conditioned area, etc., and also need to be placed
for at least 2 hours before powering up. Avoid exces-
sive temperature difference and cause condensation
or equipment damage.
7. DO NOT PAINT monitor or expose to heavy dirt or
dust.
8. Do not use cigarettes to test PM2.5 measurements.
The particles of cigarettes are mostly between 0.1
and 0.3 microns, and the concentration cannot be
controlled. As a result, the PM2.5 measurement
deviation is too large.
9. When multiple monitors use RS-485 wired network-
ing, when sharing a power supply, make sure that
the power supply wiring uses the same name of the
power polarity, and the wrong connection may cause
damage to the equipment.
10. Re-use after first use orextended time, it should be
continuously energized for more than 48 hours to
ensure stable output of all measured values.
11. The built-in CO2 sensor of this monitor has a self-
calibration function. The readings may show devia-
tions after power on or after a period of power off.The
readings will return to normal after 2-7 days of con-
tinuous power. The sensor will automatically re-cali-
brate during long term use.
12. Please note that the automatic detection time of the
device firmware is one minute after the monitor is
powered on. At this time, the indicator of the monitor
does not light, and the communication fails to con-
nect. Please be patient and wait for the automatic
detection of the monitor to complete. When the indi-
cator light turns on, it can be used normally!
GENERAL DATA
Table 1. General Data
Part Number
C7355A1050
Detection
PM2.5/PM10, CO2, TVOC,
Paraments
Temperature & RH
Operating
Temperature: 0 to 50 °C (32 to 122 °F)
Environment
Humidity: 0 to 90% RH
Storage
(14 to 122 °F) -10 to 50 °C /
Conditions
0 to 90% RH (No condensation)
Overall
130mm(L) × 130mm(W) × 45mm(H)
Dimension
7.70 in (L) × 6.10 in (W) ×2.40 in (H)
Net weight
1.10 lb 300g
Certification
CE/FCC
Standard
3
C7355A ROOM IAQ MONITOR
31-00436—01
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