Specification

The SERVICE FILTER control is a fine tuning adjustment that has been calibrated during production to

the mid-range, which is the Recommended Setting. This control allows the user to change the point at

which the clog alarm will be triggered. Turning the SERVICE FILTER adjustment knob clockwise will

cause the FILTERSCAN WiFi Air Filter Monitor to issue an alarm at a lower level of filter clogging

(less energy consumption). Turning the SERVICE FILTER adjustment knob counter-clockwise will cause

the FILTERSCAN WiFi Air Filter Monitor to issue an alarm at a higher level of filter clogging (more

energy consumption). See the FAQ Section for further information.

Operation - FILTERSCAN WiFi Air Filter Monitor

System Monitoring The STATUS LED will blink green approximately once per minute (called

a heartbeat) to indicate that the unit is functioning properly. Usually the

FILTERSCAN WiFi Air Filter Monitor will be in the standby mode,

conserving power. It wakes up periodically to monitor air filter condition,

battery level, and system operation. If no alarm conditions are detected,

the FILTERSCAN WiFi Air Filter Monitor goes back to sleep after

several minutes of monitoring.

NOTE: Should there be a power failure the FILTERSCAN WiFi Air

Filter Monitor will save all parameters such as the clean air filter

calibration and the current state of the air filter. When power is restored,

the FILTERSCAN WiFi Air Filter Monitor will continue operation with

no user action required. The same applies when replacing depleted

batteries.

Alarm Modes The FILTERSCAN WiFi Air Filter Monitor provides both audible and

visual local alarms indicating a clogged air filter, a low battery, or a system

malfunction. In addition, the AirFilterSentry Notification Service allows

remote monitoring* of system conditions. *Subscription to the AirFilterSentry

Notification service is required to enable this feature.

NOTE: The HVAC system blower fan must be running when the

FILTERSCAN WiFi Air Filter Monitor attempts to check air filter

condition. Since the FILTERSCAN WiFi Air Filter Monitor checks the

air filter condition periodically, it may take several days to detect, trigger,

and alert a clogged filter condition.

NOTE: The FILTERSCAN WiFi Air Filter Monitor has a light sensor

which prevents audible alarms when there is no light present at the

Monitor location. This prevents awaking occupants while sleeping and

prevents needless beeping in a crawl space, attic, or other unoccupied

location. The visual Status LED will still operate normally regardless of

lighting conditions.

Clogged Air Filter When the FILTERSCAN WiFi Air Filter Monitor detects a clogged air

filter, an alert condition is triggered. The red STATUS LED will illuminate,

blinking five times approximately every ten minutes until the alert condition

is reset. There will also be an audio alert which corresponds to the visual

alert indication. NOTE: Allowing this alarm condition to go on indefinitely

will drain the batteries (-B model only). The clogged filter alert is reset by

following the instructions in the section "Calibrating When Installing a New

Air Filter" below. In addition, a text and or email will be sent to a

designated person if you have signed up for the AirFilterSentry

Notification Service.