{"product_id":"433mhz-1ch-rf-relay-receiver-wireless-remote-control-switch","title":"433MHz 1CH RF Relay Receiver Wireless Remote Control Switch","description":"\u003ch2\u003e433MHz 1-Channel RF Relay Receiver – Wireless Remote Control Switch Module\u003c\/h2\u003e\n\u003cp\u003eTake control of your lighting and electrical devices without running a single wire. The \u003cstrong\u003e433MHz 1-Channel RF Relay Receiver\u003c\/strong\u003e is a compact, reliable wireless remote control switch module designed for seamless integration into home automation, DIY electronics projects, and smart switching applications. With its ultra-small footprint of just \u003cstrong\u003e22.5 mm × 11 mm × 8 mm\u003c\/strong\u003e, it tucks neatly into enclosures, junction boxes, or custom builds — all while delivering rock-solid 433MHz RF performance.\u003c\/p\u003e\n\n\u003ch3\u003eWhy You'll Love This RF Relay Module\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCord-Free Convenience:\u003c\/strong\u003e Operate lights, fans, or other low-voltage devices wirelessly from a compatible 433MHz remote transmitter — no messy wiring runs needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle-Channel Relay Control:\u003c\/strong\u003e One dedicated relay channel gives you clean, focused switching control — ideal for on\/off light switching, gate openers, and automation triggers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Micro Module Design:\u003c\/strong\u003e At only 22.5 × 11 × 8 mm, this module is one of the smallest 433MHz relay receivers available, making it perfect for space-constrained installations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e433MHz RF Signal:\u003c\/strong\u003e Operates on the widely adopted 433MHz frequency band, compatible with a broad range of standard RF transmitters and remote controls.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Plastic Housing:\u003c\/strong\u003e Lightweight yet sturdy plastic construction protects internal components while keeping overall weight minimal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIY \u0026amp; Home Automation Friendly:\u003c\/strong\u003e Easy to integrate into Arduino, Raspberry Pi, or standalone relay-switching projects — a versatile building block for makers and hobbyists.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStable Long-Range Reception:\u003c\/strong\u003e Engineered for consistent signal reception across typical indoor and outdoor distances. If range shortens over time, simply test in a new location away from interference sources.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e433 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Channel (1CH)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRF Relay Receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22.5 mm × 11 mm × 8 mm (L × W × H)\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\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWireless light switching, home automation, DIY electronics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWireless light switch retrofits\u003c\/li\u003e\n  \u003cli\u003eDIY home automation systems\u003c\/li\u003e\n  \u003cli\u003eArduino \u0026amp; Raspberry Pi relay projects\u003c\/li\u003e\n  \u003cli\u003eGarage door and gate control\u003c\/li\u003e\n  \u003cli\u003eRemote switching for low-voltage devices\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eLearn More About RF \u0026amp; Home Automation Standards\u003c\/h3\u003e\n\u003cp\u003eFor guidance on safe installation of electrical switching devices, visit the U.S. Consumer Product Safety Commission (CPSC) for product safety resources. Electronics hobbyists and engineers can also explore RF communication standards at \u003ca href=\"https:\/\/www.nist.gov\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eNIST (National Institute of Standards and Technology)\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the 433MHz 1CH RF Relay Receiver used for?\u003c\/h4\u003e\n\u003cp\u003eA: The 433MHz 1CH RF Relay Receiver is a wireless switch module that lets you remotely control lights, fans, or other electrical devices using a compatible 433MHz RF remote transmitter. It is widely used in home automation, DIY electronics, and smart switching projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What are the dimensions and materials of this RF relay module?\u003c\/h4\u003e\n\u003cp\u003eA: This compact micro module measures 22.5 mm × 11 mm × 8 mm (Length × Width × Height) and is constructed from durable lightweight plastic, making it easy to fit inside enclosures and custom project housings.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What should I do if the wireless range of the module seems reduced?\u003c\/h4\u003e\n\u003cp\u003eA: If you notice the remote control distance has decreased, try testing the module in a different location. Wireless signal range can be affected by nearby electronic interference, metal surfaces, or thick walls. Moving the receiver or transmitter even slightly can often restore full operating range.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this module compatible with standard 433MHz remotes?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This receiver operates on the widely used 433MHz frequency band, making it broadly compatible with standard 433MHz RF remote transmitters available on the market. Always verify your transmitter's frequency before pairing.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this module be used in Arduino or Raspberry Pi projects?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The 433MHz 1CH RF Relay Receiver is a popular choice for maker and hobbyist projects, including Arduino and Raspberry Pi automation builds, thanks to its compact size and straightforward relay output.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the 433MHz 1CH RF Relay Receiver used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 433MHz 1CH RF Relay Receiver is a wireless switch module that lets you remotely control lights, fans, or other electrical devices using a compatible 433MHz RF remote transmitter. 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