{"product_id":"trm01-delay-timer-relay-module-5v-12v-24v-555-timer-self-locking","title":"TRM01 Delay Timer Relay Module 5V 12V 24V – 555 Timer Switch","description":"\n\u003ch2\u003eTRM01 Delay Timer Relay Module – Self-Locking, 4-Mode Time Switch\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eTRM01 Delay Timer Relay Module\u003c\/strong\u003e is a versatile, high-quality time-switch board built around a reliable 555-timer circuit. Designed for makers, hobbyists, and engineers alike, it supports four pre-set operating modes and allows fully customisable delay timing between 0.1 and 120 seconds — all with a clean, simple interface and non-volatile memory so your settings are never lost on power-down.\u003c\/p\u003e\n\u003cp\u003eAvailable in three working voltage versions (DC 5V, 12V, and 24V), this compact module slots into a wide range of automation, home-lab, and DIY control projects without any complicated setup.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4 Operating Modes:\u003c\/strong\u003e Delay ON, Delay OFF, Self-Locking, and Trigger Delay — covering the most common time-switch requirements in a single board.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Delay Time:\u003c\/strong\u003e Set any delay from \u003cstrong\u003e0.1 seconds up to 120 seconds\u003c\/strong\u003e to match your exact application.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTriple Voltage Support:\u003c\/strong\u003e Choose from DC \u003cstrong\u003e5V, 12V, or 24V\u003c\/strong\u003e variants to suit your power supply.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Supply Anti-Reverse Protection:\u003c\/strong\u003e Built-in protection guards the module against accidental reverse polarity wiring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNon-Volatile Memory:\u003c\/strong\u003e Parameters are saved automatically — settings are retained even after the power is cut.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStable Performance:\u003c\/strong\u003e Uses high-quality components for consistent, repeatable timing in real-world environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExpandable:\u003c\/strong\u003e Custom functions can be added on request to meet specific application needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\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\u003eTRM01\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 5V \/ 12V \/ 24V (select version)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDelay Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1 s – 120 s (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Modes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDelay ON, Delay OFF, Self-Locking, Trigger Delay\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReverse Polarity Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter Memory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNon-volatile (saved on power-off)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCB module (screw terminal connections)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomated lighting control systems\u003c\/li\u003e\n  \u003cli\u003eMotor start\/stop sequencing\u003c\/li\u003e\n  \u003cli\u003eDIY home automation projects\u003c\/li\u003e\n  \u003cli\u003eIndustrial delay-switch circuits\u003c\/li\u003e\n  \u003cli\u003eArduino \/ Raspberry Pi auxiliary relay control\u003c\/li\u003e\n  \u003cli\u003eFan and ventilation timing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/792leds-510k-l7-large-red-light-therapy-led-panel-infrared-light-pad-human-pet-full-body-use-massage-relaxation-660nm-850nm\"\u003e792LEDs L7 Large LED Panel – Full Body Red \u0026amp; Infrared Light\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/2-3m-car-drain-cleaning-brush-sunroof-pipe-detailing-tool\"\u003e2.3m Flexible Car Drain Cleaning Brush – Pipe Detailing 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: What voltage version of the TRM01 delay relay module should I choose?\u003c\/h4\u003e\n\u003cp\u003eA: The TRM01 delay timer relay module is available in DC 5V, 12V, and 24V versions. Choose the version that matches your project's power supply. For microcontroller projects (Arduino, Raspberry Pi, etc.) the 5V version is typically ideal; for automotive or industrial applications, 12V or 24V are more appropriate.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I change the delay time after the module has been set up?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The delay time on the TRM01 is fully adjustable at any time between 0.1 seconds and 120 seconds. Any changes you make are automatically saved to non-volatile memory, so your custom settings remain intact even after the power is disconnected.\u003c\/p\u003e\n\u003ch4\u003eQ: How many operating modes does the TRM01 delay relay module support?\u003c\/h4\u003e\n\u003cp\u003eA: The module comes pre-loaded with four operating modes: Delay ON, Delay OFF, Self-Locking, and Trigger Delay. These cover the most common time-switch scenarios. Additional custom functions can also be added based on specific application requirements.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this delay relay module protected against incorrect wiring?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The TRM01 includes a built-in power-supply anti-reverse protection circuit. This safeguards the module from damage if the DC power wires are accidentally connected with reversed polarity.\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 voltage version of the TRM01 delay relay module should I choose?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The TRM01 delay timer relay module is available in DC 5V, 12V, and 24V versions. Choose the version that matches your project's power supply. For microcontroller projects (Arduino, Raspberry Pi, etc.) the 5V version is typically ideal; for automotive or industrial applications, 12V or 24V are more appropriate.\"}}, {\"@type\": \"Question\", \"name\": \"Can I change the delay time after the module has been set up?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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