This is a strange and amusing kit! Just connect the battery and it happily emits a strange high pitched squeal once every minute. If you're not the one that hid the Secret Squealer, it's pretty difficult to find, because it only squeals for a second, then it is quiet again until its 1 minute rest period is over! Size of board: 2” x 2.25”. Complete with all parts, PC board and instructions. Skill Level 1.

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Operates from one 9V battery (not included).