@mehmet.bkr5: There is a small error in the circuit diagram shown in the video I shared. The AI mistakenly showed one of the integrated circuits as an NE556. However, the design requires two NE555 integrated circuits. I apologize for overlooking this; the correct version is as stated.🙏 3-Tone Siren & Police Flasher DIY 🚨🔊 Description: Build a multi-functional circuit with 3 emergency sirens (police, ambulance, fire) and a police LED flasher! Built using NE555, NE556, UM3561 ICs, and transistors.  Parts List: 12V LED Modules (Red/Blue)  NE555 & NE556 ICs  UM3561 Siren IC  0.5W Speaker  2N3904 & 2N2222 Transistors  Resistors & Capacitors  12V Battery Input  (Note: Visual created with AI support.) Hashtags: #SirenCircuit #PoliceFlasher #DIYElectronics #NE555 #Electronics Warning: ⚠️ Warning: Electronics DIY can be risky for non-experts. Always build circuits under professional guidance with proper safety precautions!

Mehmet Bakır

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Sunday 27 September 2026 18:40:41 GMT