A. New Way of Pranking You'll get 3 printed circuit board (PCB) noise generators, which can be good 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's a nice prank prop for April Fools' Day to play on friends or colleagues. B. Long - lasting Battery This PCB is equipped with a large - capacity battery. Before the battery runs out, the person being pranked may get quite annoyed. C. Unique Sound Effects The device contains 7 different noises to choose from. Just press the button, and you can switch the sound effects. These sound effects include ordinary beeps, high - pitched screams, cricket chirps, etc. You can become a funny prankster on April Fools' Day. D. 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 many places. You can even use a small sticker to stick it in an unnoticeable place. E. Distracting Effects Once set up and hidden, the intermittent sounds may distract the person being pranked and make them eager to find it. As long as it's well - hidden, it may be hard for anyone to find it. Before finding it, the searcher may get angry. F. Enhanced Prank Effects This set of products includes 3 devices, which can simultaneously emit different sounds from different locations for pranks, potentially making the person being pranked more irritated. If you feel it's not sufficient, you can also buy multiple sets of products. G. Hiding Tips 1. **Imitation Style**: Hide it near electrical appliances that make beeping sounds, like 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.