Your front facing camera on your smartphone picks up on infrared so if you point your remote at your phone’s front camera and press any button you’ll see the infrared. If the light is faint the batteries are probably dying. Neat!
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wow, that's pretty neat...I will use that next time, its a good way to make sure your not wasting batteries, by putting new ones in when you don't need to. Thank You, will use!!!
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