{"product_id":"220v-sound-sensor-light-switch-auto-on-off-corridor-stair","title":"220V Sound Sensor Light Switch – Auto On\/Off, MR-SK50A","description":"\n\u003ch2\u003eSmart Sound-Activated Light Switch – Hands-Free, Energy-Saving Automation\u003c\/h2\u003e\n\u003cp\u003eNever fumble for a light switch in the dark again. The \u003cstrong\u003eMR-SK50A Sound Sensor Switch\u003c\/strong\u003e automatically turns lights on the moment it detects sound — a footstep, a clap, or a voice — and switches them off again after approximately 45 seconds of silence. It only activates in low-light or dark conditions (≤10 Lux), so it stays dormant during the daytime and conserves energy around the clock.\u003c\/p\u003e\n\n\u003cp\u003eCompact, durable, and easy to install, this intelligent switch is ideal for corridors, stairways, bathrooms, warehouses, storage rooms, and any space where hands-free lighting control adds convenience and saves electricity.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic sound activation:\u003c\/strong\u003e Detects sounds of 50–70 dB within a 6-metre range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDark-only operation:\u003c\/strong\u003e Dormant in daylight; activates only when ambient light falls below 10 Lux\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto shut-off:\u003c\/strong\u003e Light stays on for ~45 seconds (40 s ± 10 s) then turns off automatically\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide voltage compatibility:\u003c\/strong\u003e AC 180–265 V, 50\/60 Hz — suitable for most global mains supplies\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow load power:\u003c\/strong\u003e Supports up to 40 W (LED downlights, ceiling lamps, panel lights, standard bulbs)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIP22 waterproof rated:\u003c\/strong\u003e Splash-resistant construction for bathroom and utility-area use\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide operating temperature range:\u003c\/strong\u003e -20 °C to +45 °C for year-round reliability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact form factor:\u003c\/strong\u003e 38 mm × 28 mm × 16 mm — fits neatly into standard switch housings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnergy-saving design:\u003c\/strong\u003e Eliminates lights left on accidentally, reducing electricity consumption\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in Mainland China\u003c\/strong\u003e\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\u003eMR-SK50A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 180–265 V, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Load Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 40 W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSound Detection Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50–70 dB (within 6 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInduction Delay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 s ± 10 s\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhotosensitive Threshold\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 10 Lux\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWaterproof Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP22\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20 °C to +45 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePlastic\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e38 mm × 28 mm × 16 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatible Lighting Fixtures\u003c\/h3\u003e\n\u003cp\u003eWorks with LED downlights, ceiling lamps, panel lights, standard bulbs, and most other lighting appliances up to 40 W.\u003c\/p\u003e\n\n\u003ch3\u003eIdeal Locations\u003c\/h3\u003e\n\u003cp\u003eCorridors · Stairways · Bathrooms · Warehouses · Storage rooms · Garages · Utility rooms\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Sound Sensor Switch (Model MR-SK50A)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou Might Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-2-pin-quick-splice-spring-wire-connectors-lock-terminals\"\u003e10pcs 2-Pin Spring Wire Connectors – Quick Splice Lock Terminals\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/12pcs-16mm-momentary-push-button-switch-1no-metal-2-pin-self-reset\"\u003e12pcs 16mm Momentary Push Button Switch 1NO Metal 2-Pin Self-Reset\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-broom-handle-grip-sleeve-22mm-high-elasticity-nonslip-plastic-mop-stick-replacement-end-cap-for-home-cleaning-universal\"\u003e10pcs Broom Handle Grip Sleeve 22mm – Home Cleaning Accessory\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: Will this sound sensor switch turn on the light during the day?\u003c\/h4\u003e\n\u003cp\u003eA: No. The MR-SK50A is designed to remain dormant when ambient light exceeds 10 Lux (typical daytime or well-lit conditions). It only activates its sound-detection function in dark environments, making it highly energy-efficient and preventing unnecessary daytime triggering.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What types of lights are compatible with this sound sensor switch?\u003c\/h4\u003e\n\u003cp\u003eA: The switch is compatible with LED downlights, ceiling lamps, panel lights, standard incandescent or energy-saving bulbs, and other lighting fixtures or appliances with a load power of 40 W or less operating on AC 180–265 V.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How sensitive is the sound detection, and from how far away does it work?\u003c\/h4\u003e\n\u003cp\u003eA: The sensor detects sounds in the 50–70 dB range (equivalent to normal conversation or footsteps) within a range of up to 6 metres, making it well-suited for corridors, stairways, and similarly sized spaces.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How long does the light stay on after being triggered?\u003c\/h4\u003e\n\u003cp\u003eA: Once triggered by sound, the connected light will remain on for approximately 45 seconds (40 s ± 10 s). If no further sound is detected within that window, the switch will automatically turn the light off.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this switch safe to use in a bathroom?\u003c\/h4\u003e\n\u003cp\u003eA: The MR-SK50A carries an IP22 waterproof rating, which means it is protected against dripping water and light splashes. It is suitable for bathroom ceiling installations where it will not be directly exposed to water spray or submersion.\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\": \"Will this sound sensor switch turn on the light during the day?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. The MR-SK50A is designed to remain dormant when ambient light exceeds 10 Lux (typical daytime or well-lit conditions). 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