New Way of Pranking You will get 3 printed circuit board (PCB) noise generators, which are the ultimate prank gifts or revenge tools. Simply start the noise generator and hide it; it will emit beeps, shrill screams, or cricket chirps at random intervals of 5 to 25 minutes. It is an excellent prank prop for April Fools' Day to play on friends or colleagues. This PCB is equipped with a large - capacity battery. Before the battery runs out, the person being pranked will be driven crazy. Unique Sound Effects The device contains 7 different noises to choose from. Just press the button, and you can easily switch the sound effects. These sound effects include ordinary beeps, high - pitched screams, cricket chirps, etc. Become the funniest prankster on April Fools' Day. Compact and Lightweight It measures 1.69×0.51×0.42 inches and weighs 0.28 ounces. This small and annoying sound - emitting device can be easily hidden in most places. You can even use a small sticker to stick it in an inconspicuous place. Once set up and hidden, the intermittent sounds will distract the person being pranked and make them eager to find it. As long as it is well - hidden, no one can find it. Before finding it, the searcher will roar in anger. Even Crazier Effects This set of products includes 3 devices, which can simultaneously emit different sounds from different locations for pranks, making the person being pranked even more irritated. If you think it's not enough, you can also buy multiple sets of products at the same time. Hiding Tips 1. **Imitation Style**: Hide it near electrical appliances that make beeping sounds, such as near the TV, refrigerator, or air conditioner. 2. **Unexpected Corners**: Such as under the tables and chairs, behind the potted plants, inside the air - conditioner holes, near the exhaust vents, beside the clutter piles, above the chandeliers, etc. 3. **Impossible Places**: Such as on top of the car glove box, inside the mattress or sofa, within the wooden floor, or in the interlayer of the brick wall.