{"product_id":"ne555-dc-12v-adjustable-time-delay-relay-module-0-10s","title":"NE555 DC 12V Adjustable Time Delay Relay Module 0–10 Seconds","description":"\n\u003ch2\u003eNE555 Adjustable Time Delay Relay Module – DC 12V, 0–10 Seconds\u003c\/h2\u003e\n\u003cp\u003eTake precise control of your electronics with this compact \u003cstrong\u003eNE555 Timer Switch Module\u003c\/strong\u003e. Designed for makers, hobbyists, and engineers alike, this DC 12V time delay relay board lets you set a customizable delay of \u003cstrong\u003e0 to 10 seconds\u003c\/strong\u003e before the relay engages — perfect for sequencing startup, protecting onboard equipment, or managing power switching in your projects.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMain Chip:\u003c\/strong\u003e NE555 timer IC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking Voltage:\u003c\/strong\u003e DC 12V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDelay Range:\u003c\/strong\u003e 0 – 10 seconds (adjustable via onboard potentiometer)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoard Size:\u003c\/strong\u003e 6.8 cm × 2.1 cm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelay Load Rating:\u003c\/strong\u003e AC 220V \/ 10A (max control load: 2000W)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelay Output States:\u003c\/strong\u003e Normally Open (NO) \u0026amp; Normally Closed (NC) contacts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDelay Formula:\u003c\/strong\u003e T = 1.1 × R × C (e.g., 100kΩ × 100µF ≈ 11 seconds)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e⏱ \u003cstrong\u003eAdjustable delay time\u003c\/strong\u003e – simply turn the onboard potentiometer to set your desired delay (0–10 seconds)\u003c\/li\u003e\n  \u003cli\u003e🔧 \u003cstrong\u003eExtendable delay\u003c\/strong\u003e – swap or add a larger capacitor (C1) to extend delay time beyond 10 seconds using the T = 1.1RC formula\u003c\/li\u003e\n  \u003cli\u003e💡 \u003cstrong\u003ePower indicator LED\u003c\/strong\u003e – instantly shows when the module is receiving power\u003c\/li\u003e\n  \u003cli\u003e🔴 \u003cstrong\u003eRelay status indicator LED\u003c\/strong\u003e – visual confirmation of relay engagement\u003c\/li\u003e\n  \u003cli\u003e🛡 \u003cstrong\u003eRelay protection circuit\u003c\/strong\u003e – built-in protection for reliable and safe switching\u003c\/li\u003e\n  \u003cli\u003e🚗 \u003cstrong\u003eIn-vehicle use\u003c\/strong\u003e – delays power to onboard accessories, preventing inrush current from damaging equipment when connected to a car power outlet\u003c\/li\u003e\n  \u003cli\u003e🔌 \u003cstrong\u003eSequential start-up\u003c\/strong\u003e – stage the startup of multiple devices to avoid simultaneous high-current draw\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eWhen DC 12V power is applied to the module, the relay does \u003cem\u003enot\u003c\/em\u003e engage immediately. Instead, it waits for the programmed delay period (1–10 seconds, adjustable). During this delay:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNormally Open (NO) contact remains \u003cstrong\u003eopen\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eNormally Closed (NC) contact remains \u003cstrong\u003eclosed\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOnce the delay elapses, the relay engages and the output states flip. As long as power is continuously supplied, the relay stays engaged.\u003c\/p\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eProtecting automotive accessories from inrush current at startup\u003c\/li\u003e\n  \u003cli\u003eStaggered power sequencing for multi-device electronics projects\u003c\/li\u003e\n  \u003cli\u003eDIY home automation and time-controlled switching circuits\u003c\/li\u003e\n  \u003cli\u003eArduino \/ Raspberry Pi accessory control with delayed activation\u003c\/li\u003e\n  \u003cli\u003eIndustrial and hobbyist prototyping boards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: How do I adjust the delay time on the NE555 timer relay module?\u003c\/h4\u003e\n\u003cp\u003eA: The onboard potentiometer controls the delay time. Turning it clockwise increases the delay (up to ~10 seconds), while turning it counter-clockwise decreases it. For delays longer than 10 seconds, you can replace or add a larger capacitor in the C1 position using the formula T = 1.1 × R × C to calculate your target delay.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What load can the NE555 DC 12V delay relay module control?\u003c\/h4\u003e\n\u003cp\u003eA: The relay is rated for AC 220V at up to 10 amps, allowing it to switch loads up to 2000 watts. Always ensure your connected device does not exceed these ratings to maintain safe and reliable operation.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this time delay relay module be used in automotive \/ in-vehicle applications?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. One of its primary use cases is protecting in-vehicle accessories by introducing a short delay before power is delivered, which prevents high inrush current from damaging sensitive onboard equipment connected to a car power outlet.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the difference between the Normally Open (NO) and Normally Closed (NC) relay outputs?\u003c\/h4\u003e\n\u003cp\u003eA: Before the delay period completes, the NO contact is open (no current flows) and the NC contact is closed (current flows). After the delay, these states reverse — NO closes and NC opens. This gives you flexibility to use the module for both \"delayed on\" and \"delayed off\" switching scenarios in your circuit.\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\": \"How do I adjust the delay time on the NE555 timer relay module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The onboard potentiometer controls the delay time. Turning it clockwise increases the delay (up to ~10 seconds), while turning it counter-clockwise decreases it. 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