Sinclair SP-75UV User Manual page 8

Child lock
Press both Speed and Power buttons at the same time for 5 seconds to activated Child
Lock function, after beep sound, other buttons don't work. To deactivated it, press both
buttons at the same time for 5 seconds.
Filter replacement reminder
When turn on the unit, it start to count the life of filters. It will continue to count with
every power on from where it was left off. After reaching 2000 hours, the Ionizer and UV
LEDs will flash to indicate that a replacement is needed. After the filter was replaced,
press Health and Speed button at the same time for 3 seconds, LED will off. The unit
will restart count the filter life again.
6