{"product_id":"si4438-chip-hc-12-v4-0-wireless-serial-port-module-100mw-high-power-254-channels-half-duplex-wireless-communication-module","title":"Si4438 Chip Hc 12 V4 0 Wireless Serial Port Module 100mw High Power 254 Channels Half Duplex Wireless Communication Module","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003e1KM Long Distance Wireless Module\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e100mW High Power RF Module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003e3.3V 5V Universal Serial Module\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eIndustrial Grade Wireless Module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNONE\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCondition\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNew\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHC-12 Wireless Serial Module\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e433MHz RF Transceiver Module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eLow Power Consumption Transceiver Module\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eWireless Sensor Data Collection Module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e-40-85C\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePackage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eSOP\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eQuantity\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e1\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSI4438 Wireless Communication Module\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eUART TTL Wireless Data Transmission Module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSmart Home RF Transmitter Receiver\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eHalf Duplex Wireless Transceiver\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupply Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e3.3V\/5V\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eModule\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003esemi_Choice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\r\n\u003cdiv class=\"detailmodule_dynamic\"\u003e\u003ckse:widget data-widget-type=\"relatedProduct\" id=\"1005000023722809\" title=\"\" type=\"relation\"\u003e\u003c\/kse:widget\u003e\u003c\/div\u003e\r\n\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cbr\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S31f8f6af63b5499d8ecbe07cbb1ce128N.jpg\"\u003e\u003cbr\u003eProduct Features:\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e1. Long distance wireless transmission, with an airborne baud rate of 500bps, supporting a communication distance of 1000 meters in open areas\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e2. Operating frequency range of 433.4-483.8MHz, with up to 254 communication channels\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e3. Maximum 100mW (20dBm) transmission power (can be set to 8 levels of power)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e4. Four working modes to adapt to different application scenarios\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e5. Built in MCU, communicates with external devices through serial port\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eProduct Introduction\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eThe HC-12 wireless serial communication module is a new generation multi-channel embedded wireless data transmission module. The wireless operating frequency band is 433.4-483.8MHz, and multiple channels can be set with a step frequency of 400KHz, for a total of 127 channels. In default mode, the module is\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eHigh transmission power of 100mW (20dBm), 5000bps airborne baud rate, receiving sensitivity of -116dBm, open area 1000\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eThe communication distance of meters.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eThe module adopts stamp hole packaging method and can be surface mounted and soldered. The module size is 27.4mm × 13.2mm (excluding spring antenna), which is very convenient for customers to embed into the application system. There is a PCB antenna base ANT1 on the module, and users can use coaxial lines to connect external antennas in the 433MHz frequency band (suitable for 433.4MHz-450MHz) or 470MHz frequency band (suitable for 450MHz-483.8MHz) according to the selected communication channel; There are also antenna welding holes ANT2 inside the module,\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eConvenient for users to weld spring antennas. Users can choose one of the antennas according to their usage requirements.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eThe module contains an MCU inside, and users do not need to program the module separately. Various transparent transmission modes only need to send and receive serial data, making it easy to use. The module adopts multiple serial port transparent transmission modes, and users can choose according to their usage requirements using AT commands.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eThe average operating currents of the four modes FU1, FU2, FU3, and FU4 in idle state are 3.3mA, 85 μ A, and 16.5mA, respectively\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eAnd 16.5mA, with a maximum operating current of about 120mA (in full power transmission state).\u003cbr\u003e\u003cstrong\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S89c4485e44c44b0e81f205f7ec4fc129L.jpg\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eProduct Parameters:\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eModel: HC-12 Surface mount V4.0\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eCommunication interface: UART 3.3V~5V TTL level\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eCommunication level: 3.3V\/5V level\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eWorking humidity 10%~90%\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eRF chip solution: SI4438, external 433MHz antenna\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eTransmission rate 4-5KB\/s\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eCommunication distance: 1km\/FU4, half duplex, 1200~115200bp\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eWorking voltage 3.0~5.5V\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eCommunication interface\/level: UART 3.3\/5V TTL level\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eWorking frequency range of 433.4~484.0MHz, with a total of 254 channels\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eTransmission power (MAX): 100mW (20dBm)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eFour idle current modes: FU1:3.3mA, FU2:85 μ A, FU3:16.5mA, FU4:16.5mA,\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eWorking current (MAX): 100mA (full power)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eWorking temperature: -40~+85 ℃\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eReference distance: 1000m\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eModule size: 27.4 × 13.2\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eBuilt in firmware, power on self connection, note that at least 2 modules are required for interconnection.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eProduct application:\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003ewireless sensor\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eResidential building security\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eRobot wireless control\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eIndustrial remote control and telemetry\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eAutomated data collection\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eContainer Information Management\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003ePOS system\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eWireless collection of gas meter data\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eVehicle Keyless Entry System\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003ePC wireless networking\u003cbr\u003e\u003cstrong\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sd9398d0dfb9e46fe9803168753ba25bdV.jpg\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eProduct List:\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e1X module\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e1X spring antenna\u003cbr\u003e\u003cstrong\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sc88a858ad6c643e3997a32661b8fe7bcK.jpg\"\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S142af545585246aa95fb60b051f753a4O.jpg\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sb0c82fbf74494ff69a81460f8b50b7d9s.jpg\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S7ee3fb1e1c334dc889a41c00e649efb7R.jpg\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S42296b0ccf3540f2a15ba7ec98b7a06bP.jpg\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sda6b87d99ba940a3bf0c14f60195548dv.jpg\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S5d1a2adfccf74ed086a39bc5759eb68er.jpg\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sd57a0266f3f9427eb51092661b79ebb0Z.jpg\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S3051b5e9e2a14f82a1cd0fe6b22748bc2.jpg\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S1eb50758409949d283debdfe35a792b47.jpg\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S965dfe08227f4c629853813dff924a22d.jpg\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S3b37a545936a4774bd27856e398fbddb1.jpg\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sb422fa94ebef499198288431a9781456C.jpg\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S3754f4c11137457ea3840a2d14cd587fT.jpg\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S7b69cda1a6a04d49b8c15a0c5dc04f04q.jpg\"\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003c\/div\u003e\u003c\/div\u003e\r\n","brand":"Yoeruyo","offers":[{"title":"A","offer_id":55377139466539,"sku":"14:1202#A","price":16.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/S328924a93a2c4f96ad1452ff3453e5dfV.webp?v=1788332859","url":"https:\/\/yoeruyo.com\/products\/si4438-chip-hc-12-v4-0-wireless-serial-port-module-100mw-high-power-254-channels-half-duplex-wireless-communication-module","provider":"Yoeruyo","version":"1.0","type":"link"}