The light emitted from IR emitter (bulb like thing in remote) installed in your TV, AC or any other remotes when a button is pressed is generally not visible.
But if you watch it through any digital camera (even that of mobile), you can actually see the light coming out of it whenever a button is pressed.
So, next time if your remote is not working, you can watch the IR emitter through camera and check whether your battery is weak (light of less intensity will be emitted) or there is some problem in the remote.
But if you watch it through any digital camera (even that of mobile), you can actually see the light coming out of it whenever a button is pressed.
So, next time if your remote is not working, you can watch the IR emitter through camera and check whether your battery is weak (light of less intensity will be emitted) or there is some problem in the remote.
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