{"product_id":"rtu5024-gsm-access-controller-sms-remote-door-control-switch","title":"RTU5024 GSM Access Controller | SMS Remote Door Control Switch","description":"\n\u003ch2\u003eRTU5024 GSM Mobile Phone Access Controller – Smart SMS Remote Door Control\u003c\/h2\u003e\n\u003cp\u003eTake full control of your door, gate, or security relay from anywhere in the world using just your mobile phone. The \u003cstrong\u003eRTU5024 GSM Access Controller\u003c\/strong\u003e lets you open or close any connected door or gate with a simple free phone call — no apps, no internet connection required. Supporting all major global GSM networks on quad-band 850\/900\/1800\/1900MHz, this compact and rugged device is perfect for homes, offices, warehouses, industrial sites, and rental properties.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose the RTU5024 GSM Door Controller?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree Operation via Phone Call:\u003c\/strong\u003e The relay activates on the first ring from an authorized number — no call charges, no monthly fees.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuad-Band Global Compatibility:\u003c\/strong\u003e Works on 850\/900\/1800\/1900MHz GSM networks worldwide.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUp to 200 Authorized Users:\u003c\/strong\u003e Easily add or remove phone numbers via SMS text commands.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaller ID Security:\u003c\/strong\u003e Ignores unknown or unauthorized callers, keeping your access point secure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSMS Confirmation:\u003c\/strong\u003e Receive a customizable text message confirmation every time the relay is activated.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProgrammable Relay Timing:\u003c\/strong\u003e Set your own relay closing\/opening duration to suit your application.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRugged Metal Enclosure:\u003c\/strong\u003e IP30-rated metal casing with system isolation — ideal for industrial environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Wall-Mountable:\u003c\/strong\u003e Small footprint with support for wall mounting in any space.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Range:\u003c\/strong\u003e Functions in temperatures from -20°C to +60°C and up to 90% relative humidity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo Extra Hardware Needed:\u003c\/strong\u003e No remotes or keypads required — your phone is all you need.\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\u003eRTU5024\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGSM Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e850 \/ 900 \/ 1800 \/ 1900 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNetwork Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2G (compatible with 3G\/4G SIM cards)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDigital Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNC \/ NO dry contact, 3A \/ 240VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDC Power Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9–24VDC \/ 2A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSIM Card\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard SIM card slot\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAntenna Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50Ω SMA antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20°C to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHumidity Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 90% relative humidity\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP30\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~13 × 9.5 × 3 cm (5.12 × 3.74 × 1.18 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × RTU5024 GSM Mobile Phone Access Controller\u003c\/li\u003e\n  \u003cli\u003e1 × GSM Antenna\u003c\/li\u003e\n  \u003cli\u003e2 × Terminal Connectors\u003c\/li\u003e\n  \u003cli\u003e1 × English User Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cp\u003eThe RTU5024 is incredibly versatile and can be used for:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eElectric gate and garage door control\u003c\/li\u003e\n  \u003cli\u003eSecurity door access for offices and apartment buildings\u003c\/li\u003e\n  \u003cli\u003eRemote relay switching for industrial equipment\u003c\/li\u003e\n  \u003cli\u003eRental property keyless entry systems\u003c\/li\u003e\n  \u003cli\u003eFarm and agricultural gate control\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\/1-2ch-16a-tuya-wifi-smart-switch-intelligent-interruptor-smart-life-app-control-breaker-relay-works-with-alexa-google-assistant\"\u003e1\/2 Channel Tuya WiFi Smart Relay Switch | 16A, Alexa \u0026amp; Google Home\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-2ch-tuya-wifi-smart-switch-100-240v-16a-relay-breaker-works-with-smart-life-app-alexa-google-assistant-smart-automation-module\"\u003eTuya WiFi Smart Switch Module | Voice \u0026amp; App Control\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor guidance on best practices in electronic security systems and access control, visit the U.S. Consumer Product Safety Commission (CPSC) for consumer safety standards on electronic devices.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e New and old product variants of this item may be shipped interchangeably at random. Please ensure you are comfortable with this before placing your order.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Access_control\" target=\"_blank\" rel=\"noopener\"\u003eAccess control\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Does the RTU5024 GSM access controller require a monthly subscription or internet connection?\u003c\/h4\u003e\n\u003cp\u003eA: No subscription or internet connection is needed. The RTU5024 operates entirely over the GSM cellular network. It activates on the first ring from an authorized phone number — completely free of call charges — making it a truly cost-effective remote access solution.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How many phone numbers can be authorized on the RTU5024 GSM door controller?\u003c\/h4\u003e\n\u003cp\u003eA: The RTU5024 supports up to 200 authorized phone numbers. You can add or remove users at any time by sending a simple SMS text command, giving you full, flexible control over who can access your door or gate.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What type of SIM card does the RTU5024 require, and which networks does it support?\u003c\/h4\u003e\n\u003cp\u003eA: The RTU5024 uses a standard-size SIM card and supports quad-band GSM frequencies (850\/900\/1800\/1900MHz), making it compatible with cellular networks in most countries worldwide. Note that it operates on 2G GSM technology, so your carrier must support 2G connectivity.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can the RTU5024 be used outdoors or in harsh environments?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The RTU5024 features a durable metal enclosure with an IP30 protection rating and is rated for operating temperatures from -20°C to +60°C with up to 90% relative humidity. It is well suited for industrial, commercial, and outdoor-sheltered installations.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does the RTU5024 GSM access controller require a monthly subscription or internet connection?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No subscription or internet connection is needed. The RTU5024 operates entirely over the GSM cellular network. It activates on the first ring from an authorized phone number — completely free of call charges — making it a truly cost-effective remote access solution.\"}}, {\"@type\": \"Question\", \"name\": \"How many phone numbers can be authorized on the RTU5024 GSM door controller?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The RTU5024 supports up to 200 authorized phone numbers. 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