Cause analysis: ① The battery of the hand-held box is low. ② Strong electromagnetic interference exists nearby. ③ If the hand-held box is not operated for a period of time, it will sleep. When it wakes up again, the key press time is too short. Solution: ① Please replace the battery with a new one. ② Try to avoid electromagnetic interference area. ③ When the hand-held box is not operated for a period of time, it takes a long time to press the key for the first time when waking up.
1
Reply
