Thanks for your purchasing of the WH0290
Wireless Air Quality Monitor with Indoor
Temperature and Humidity. To ensure the best
product performance, please read this manual
and retain it for future reference.
Note: P
ower up sequence can be performed in
the order shown in this section (insert batteries
in the Air Quality Monitor first, then
Do not mix old and new batteries
Do not mix Alkaline, Standard, Lithium or
Ensure batteries are installed correctly with
One Air Quality Monitor (Receiver)
One Air Quality Sensor(Wireless PM2.5 Sensor)
Two LSD( low self discharge) Ni-MH