How can i shut off alarm when the key will not unlock the door 2007 accord

 

there should be a red LED light at the top of the key that will blink when you press the lock or unlock button. if the light doesn't blink the battery is dead. That sounds to be the problem with your remotes. the battery can be replaced easily. some keys have a round circle on the back that unscrews to expose the battery. if you don't have a round access cover then the battery is replaced by taking out the small screw in the base of the key and separating the case halves