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ground fault interrupter. It is highly recommended that smoke 3. Press and hold the test button until the alarm sounds. NOTE: It lightning, children playing with matches, or arson. • In the center of a room or hallway: As it is impossible to predict alarms be wired on a separate circuit (one with no other lights or may be necessary to press the test button for up to 20 seconds for anthe source of a fire. If it is necessary to place the alarm on a wall, appliances) to ensure maximum reliability o