The spelling of the word "Detecter" is incorrect. The correct spelling is "Detector", with emphasis on the second syllable. This word is commonly used to refer to devices that detect or sense things, such as a metal detector, fire detector or smoke detector. The correct pronunciation of "Detector" is /dɪˈtɛktər/, with the vowel sound in the second syllable pronounced as "eh". Remember, spelling mistakes can affect the way one is perceived in writing, and it is important to use the correct spelling of words in all forms of communication.