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Doesn't it show the cause of the alarm on screen? It might be the low voltage alarm which on some units can't be turned off, but can be adjusted to a lower voltage if it's alerting unnecessarily.
A hummingbird can rotate each of its wings in a circle, allowing them to be the only bird which can fly forwards, backwards, up, down, sideways or sit in sheer space. To hover, hummingbirds move their wings forward and backward in a repeated figure eight, much like the arms of a swimmer treading water.
Hummingbird will refurbish that one for around 150US dollars, better then 500+ for a new one. If the screen is subjected to direct sunlight and heats up it can go out. This is why they discontinued the 67 model and replaced it with the 767.
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