Yolink YS4909-UC Installation & User Manual page 43

Battery Replacement, Continued
Z
3. Observing the correct battery position and
polarity, replace them with new AA batteries
4. Close the cover, and snap the two cover snap
clasps into the closed position.
5. In the app, verify the Valve Controller 1 is
online and the batteries are indicated as good.
The Valve Controller 1 can be powered by alka-
line or lithium-ion batteries. Do not use
rechargeable or other type batteries.
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