Modifies a noun

• condenser: The microphone used is a 3 terminal electret condenser microphone insert.

• microphone: An additional circular plate included an opening for the holding Electret microphone, flush mounted with the baffle plane.

• capsule: Another project ideal for beginners, this safe battery-powered circuit uses a tiny electret microphone capsule together with earphones.

Noun used with modifier

• sensitivity: It has an integral high sensitivity electret microphone which can be mounted on the board or extended up to 50 feet using suitable cable.

• on-board: It is fully tuneable from 100-120MHz and has high sensitivity on-board electret microphone able to clearly monitor sounds up to 25 feet away.