{"product_id":"9-channel-voice-trigger-mp3-player-car-alarm-sound-prompter","title":"9-Channel Voice Trigger MP3 Player – Car Alarm \u0026 Sound Module","description":"\n\u003ch2\u003e9-Channel Trigger MP3 Sound Prompter \u0026amp; Alarm Module\u003c\/h2\u003e\n\u003cp\u003eTake full control of your audio alerts with this versatile \u003cstrong\u003e9-Channel Voice Trigger MP3 Player\u003c\/strong\u003e. Designed for automotive and industrial applications, this compact module lets you assign up to 9 unique audio tracks to independent trigger inputs — perfect for car reverse warnings, door chimes, alarm sirens, industrial safety prompts, and more. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eWhy You'll Love It\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Voltage Flexibility:\u003c\/strong\u003e Operates on DC 5V or DC 6–35V, making it compatible with a wide range of power environments — from USB-powered setups to full 12V\/24V vehicle systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e9 Independent Trigger Channels:\u003c\/strong\u003e Each channel plays its own dedicated audio file on demand via a simple low-level (short-circuit) signal trigger — ideal for one-to-one voice prompt mapping.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Custom Audio Upload:\u003c\/strong\u003e Connect via USB cable to any computer; the device is recognized as a USB flash drive. Simply drag and drop your MP3 or WAV files — no special software needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in 32Mbit (4MB) Flash Storage:\u003c\/strong\u003e Stores your custom audio files directly on the module with support for MP3 and WAV formats at up to 48KHz sampling rate for crisp, clear sound.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3W Waterproof Speaker Included:\u003c\/strong\u003e The onboard speaker delivers loud, penetrating sound suitable for both indoor and outdoor environments, even in wet or dusty conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8 DIP Switch Trigger Modes:\u003c\/strong\u003e Configure playback behavior with 8 selectable trigger modes using the onboard DIP switch — tailor the system precisely to your application.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Volume:\u003c\/strong\u003e Use the built-in potentiometer to dial in exactly the right volume level for your environment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking Voltage:\u003c\/strong\u003e DC 5V or DC 6–35V (selectable)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking Current:\u003c\/strong\u003e 1A and above\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Power:\u003c\/strong\u003e 3W (MAX)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 500Hz – 16KHz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e 4MB (32Mbit) built-in flash\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupported Formats:\u003c\/strong\u003e MP3, WAV (max 48KHz sampling rate)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrigger Mode:\u003c\/strong\u003e Low-level signal (signal line shorted to power negative)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpeaker:\u003c\/strong\u003e 3W waterproof\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to Upload Custom Audio\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eOpen the device casing to access the USB port.\u003c\/li\u003e\n  \u003cli\u003eConnect to your computer using a data-capable USB cable — the device will appear as a USB flash drive.\u003c\/li\u003e\n  \u003cli\u003eCopy your audio files directly into the root directory. File names \u003cstrong\u003emust\u003c\/strong\u003e be 5-digit numbers (e.g., \u003ccode\u003e00001.mp3\u003c\/code\u003e).\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cem\u003eNote: Use a data USB cable, not a charge-only cable. Audio files must be stored in the root directory for one-to-one trigger playback to work correctly.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Voice Prompt\/Trigger MP3 Player Module (with 3W waterproof speaker)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExplore More Useful Products\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-crystal-peony-float-ornament-high-end-creative-hand-woven-car-interior-fashionable-car-rearview-decoration-pendant\"\u003eCrystal Peony Float Ornament – Creative Car Interior Rearview Decoration Pendant\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-high-end-car-fragrance-distribution-pendant-no-empty-bottle-of-perfume-elegant-accessories-for-car-interior-car-scent-penda\"\u003eHigh-End Car Fragrance Distribution Pendant – Elegant Car Interior Scent Accessory\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-100pcs-microfiber-towels-car-wash-drying-cloth-towel-household-cleaning-cloths-auto-detailing-polishing-cloth-home-clean-tools\"\u003eMicrofiber Towels – Car Wash Drying \u0026amp; Auto Detailing Polishing Cloths\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.fueleconomy.gov\/feg\/maintain.jsp\" target=\"_blank\" rel=\"noopener\"\u003eFuelEconomy.gov on vehicle maintenance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What types of vehicles or systems is this 9-channel trigger MP3 player compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This module supports DC 5V to 35V input, making it compatible with virtually any 12V or 24V vehicle electrical system (cars, trucks, forklifts) as well as USB-powered (5V) setups like Raspberry Pi or Arduino projects. It works anywhere you need triggered audio alerts or voice prompts.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use my own custom voice recordings or alarm sounds?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely! Simply connect the device to your computer via a data USB cable — it appears as a USB flash drive. Copy your MP3 or WAV audio files (named as 5-digit numbers, e.g., 00001.mp3) into the root directory, and each file is assigned to its corresponding trigger channel. It's quick and requires no special software.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How does the trigger system work?\u003c\/h4\u003e\n\u003cp\u003eA: Each of the 9 channels is triggered by a low-level signal — meaning a short circuit between the signal wire and the negative pole of the power supply activates playback on that channel. This makes integration with relays, switches, motion sensors, or microcontroller outputs straightforward and reliable.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the speaker weatherproof for outdoor automotive use?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The included 3W speaker is waterproof, making it well-suited for outdoor mounting on vehicles or in environments where exposure to moisture is a concern. Its strong sound penetration ensures the alert or prompt is clearly audible even in noisy surroundings.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What types of vehicles or systems is this 9-channel trigger MP3 player compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This module supports DC 5V to 35V input, making it compatible with virtually any 12V or 24V vehicle electrical system (cars, trucks, forklifts) as well as USB-powered (5V) setups like Raspberry Pi or Arduino projects. It works anywhere you need triggered audio alerts or voice prompts.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use my own custom voice recordings or alarm sounds?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely! Simply connect the device to your computer via a data USB cable — it appears as a USB flash drive. Copy your MP3 or WAV audio files (named as 5-digit numbers, e.g., 00001.mp3) into the root directory, and each file is assigned to its corresponding trigger channel. It's quick and requires no special software.\"}}, {\"@type\": \"Question\", \"name\": \"How does the trigger system work?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Each of the 9 channels is triggered by a low-level signal — meaning a short circuit between the signal wire and the negative pole of the power supply activates playback on that channel. This makes integration with relays, switches, motion sensors, or microcontroller outputs straightforward and reliable.\"}}, {\"@type\": \"Question\", \"name\": \"Is the speaker weatherproof for outdoor automotive use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The included 3W speaker is waterproof, making it well-suited for outdoor mounting on vehicles or in environments where exposure to moisture is a concern. 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