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This Velleman MK104 Electronics Cricket Solder Kit is a versatile kit perfect for both entertainment and simulating a hot summer night ambiance. This MK104 solder kit automatically activates when it detects darkness, creating a realistic cricket sound effect. With adjustable cricket repetition, effect, and tone, you can customize the experience to your liking. The MK104 also features adjustable light sensitivity, allowing you to fine-tune its response to changes in light conditions.