{"product_id":"zmq-2729-ac220v-90db-buzzer-beeper-alarm-siren-arduino","title":"ZMQ-2729 AC220V 90dB Buzzer Beeper Alarm Siren for Arduino","description":"\n\u003ch2\u003eZMQ-2729 AC220V Buzzer Beeper – 90dB Alarm Siren for Arduino \u0026amp; DIY Electronics\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eZMQ-2729 Buzzer Beeper\u003c\/strong\u003e is a high-performance AC220V alarm siren designed for Arduino projects, automation systems, security setups, and general electronics DIY applications. Delivering a powerful \u003cstrong\u003e90dB output\u003c\/strong\u003e at just 10mA current draw, this compact buzzer is an ideal audible alert component for makers, engineers, and hobbyists alike.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoud 90dB Output:\u003c\/strong\u003e Clearly audible alert signal suitable for alarms, notifications, and warning systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAC220V Supply Voltage:\u003c\/strong\u003e Compatible with standard mains voltage — no extra transformer or driver circuit required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Current Draw:\u003c\/strong\u003e Operates at only 10mA, keeping your circuit efficient and cool.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature Range:\u003c\/strong\u003e Reliable performance from -20°C to 70°C, suitable for both indoor and outdoor enclosures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArduino Compatible:\u003c\/strong\u003e Integrates seamlessly with Arduino, Raspberry Pi, and other microcontroller platforms via a relay or solid-state switch.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSMD Package:\u003c\/strong\u003e Compact surface-mount design for easy integration into PCB layouts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e Safe materials — no restricted substances declared.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable \u0026amp; Reliable:\u003c\/strong\u003e Built for continuous use in security panels, industrial alerts, and DIY automation projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eZMQ-2729\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 220V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSound Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20°C to 70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSMD\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eWhether you're building a home security system, a factory alert panel, or an Arduino-powered automation project, the ZMQ-2729 delivers a dependable, attention-grabbing alarm tone every time. Its mains-voltage compatibility makes it perfect for installations that need a direct AC-driven audible indicator without additional power conversion.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eExplore More Tools \u0026amp; Electronics\u003c\/h3\u003e\n\u003cp\u003eYou may also find these products useful for your projects:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Can the ZMQ-2729 buzzer be directly connected to an Arduino output pin?\u003c\/h4\u003e\n\u003cp\u003eA: No — because the ZMQ-2729 operates at AC220V mains voltage, it should NOT be connected directly to an Arduino GPIO pin (which outputs only 3.3V–5V DC). You must use a relay module or solid-state relay (SSR) between your Arduino and the buzzer to safely switch the AC220V supply on and off. This is standard practice for mains-voltage components in Arduino projects.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the sound level of this alarm siren, and is it loud enough for an alarm system?\u003c\/h4\u003e\n\u003cp\u003eA: The ZMQ-2729 produces a 90dB sound output, which is comparable to a lawn mower or a busy factory floor — more than sufficient for security alarms, industrial alerts, and warning systems in both indoor and outdoor environments.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the ZMQ-2729 suitable for outdoor use?\u003c\/h4\u003e\n\u003cp\u003eA: The buzzer's operating temperature range of -20°C to 70°C makes it well-suited for a variety of environments. For outdoor installations, it is recommended to house the component in a weatherproof enclosure to protect it from moisture and dust.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Can the ZMQ-2729 buzzer be directly connected to an Arduino output pin?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — because the ZMQ-2729 operates at AC220V mains voltage, it should NOT be connected directly to an Arduino GPIO pin (which outputs only 3.3V–5V DC). You must use a relay module or solid-state relay (SSR) between your Arduino and the buzzer to safely switch the AC220V supply on and off. 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