{"product_id":"hc-12-v4-0-si4438-wireless-serial-communication-module-multi-channel-embedded-wireless-data-transmission-module-433-4-483-8-mhz","title":"HC-12 V4.0 SI4438 Wireless Serial Communication Module Multi-channel Embedded Wireless Data Transmission Module 433.4-483.8 MHz","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDIY NOW\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\u003eCommunication Distance\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e1 km (Mode FU4); Half-duplex; 1200-115200 bps\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCommunication Interface\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eUART (3.3V-5V TTL Level)\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCommunication Interface\/Level\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eUART (3.3V\/5V TTL Level)\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCommunication Voltage Level\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e3.3V \/ 5V\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\u003eData Transmission Module\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eWireless Serial Communication 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\u003eModel\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eHC-12 (SMD Version V4.0)\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Current (Max)\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e100 mA (at full power)\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Frequency Band\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e433.4-484.0 MHz (254 channels total)\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Humidity\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e10%-90%\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e-40 to +85℃\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e3.0-5.5V\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\u003eRF Chip Solution\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eSi4438; supports external 433MHz antenna\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eReference Distance\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e1000 m\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupply Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e3.0-5.5V\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTransmission Rate\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e4-5 KB\/s\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTransmit Power (Max)\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e100 mW (20 dBm)\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\u003cbr\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_dynamic\"\u003e\u003ckse:widget data-widget-type=\"customText\" id=\"1005000018952037\" type=\"custom\"\u003e\u003c\/kse:widget\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S833d086d63d64fef879df709d1fd25453.png\" slate-data-type=\"image\"\u003e\u003cbr\u003eProduct Features:\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003e1. Long-range wireless transmission: Features an air baud rate of 500bps and supports a communication distance of up to 1000 meters in open environments.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003e2. Operating frequency range: 433.4–483.8 MHz, offering up to 254 communication channels.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003e3. Maximum transmit power: 100 mW (20 dBm), with 8 adjustable power levels.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003e4. Four operating modes: Adaptable to various 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 via a serial port.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eProduct Applications: Wireless sensors, residential and building security systems, wireless robot control, industrial remote control, telemetry, automated data acquisition, container information management, POS systems, wireless gas meter data collection, vehicle keyless entry systems, and PC wireless networking.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eThe module utilizes a stamp-hole package design, allowing for surface-mount soldering. With dimensions of 27.4 mm × 13.2 mm (excluding the spring antenna), it is highly convenient for customers to embed directly into their application systems. The module features an onboard PCB antenna connector (ANT1), enabling users to connect an external antenna via a coaxial cable. Depending on the selected communication channel, users can utilize either the 433 MHz band (suitable for 433.4–450 MHz) or the 470 MHz band (suitable for 450–483.8 MHz). Additionally, the module includes a dedicated soldering hole for a spring antenna (ANT2), providing a convenient option for users who prefer this antenna type. Users may select the antenna best suited to their specific application requirements.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eThe module contains an internal MCU, eliminating the need for users to perform additional programming on the module itself; in its various transparent transmission modes, users simply need to handle the sending and receiving of serial data, ensuring ease of use. The module supports multiple serial transparent transmission modes, which users can select and configure using AT commands based on their operational needs.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eIn their idle states, the average operating currents for the four modes—FU1, FU2, FU3, and FU4—are approximately 3.3 mA, 85 µA, 16.5 mA, and 16.5 mA, respectively. The maximum operating current is approximately 120 mA (occurring during full-power transmission). Product Specifications:\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eModel: HC-12 (SMD Version 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 Voltage Level: 3.3V \/ 5V\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eOperating 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 required)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eTransmission Rate: 4 – 5 KB\/s\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eCommunication Distance: 1 km (in FU4 mode); Half-duplex; 1200 – 115200 bps\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eOperating 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 (3.3V \/ 5V TTL Level)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eOperating Frequency Band: 433.4 – 484.0 MHz (Total of 254 channels)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eTransmit Power (Max): 100 mW (20 dBm)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eIdle Current (Across 4 Modes): FU1: 3.3 mA; FU2: 85 μA; FU3: 16.5 mA; FU4: 16.5 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eOperating Current (Max): 100 mA (at full power)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eOperating Temperature: -40°C to +85°C\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eReference Distance: 1000 m\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eModule Dimensions: 27.4 × 13.2 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eFeatures built-in firmware and automatic connection upon power-up. Note: A minimum of two modules is required to establish an interconnection.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003eProduct List:\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003e1 × Module\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003e1 × Spring Antenna\u003cbr\u003e\u003c\/span\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S618d44354ca34263ad425c5ca26a3245L.png\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sda015be5ff5e428dbf431ff1f7754094i.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S9d143f8af0ac4ff98d1a4f00c61814b55.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S3f342693365548b0b0de96c4638eb5b1F.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sad1e247c8a3d48adab4eaaeda70a4aa9u.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sad61b6fa3eab49a78181c3b252bac51cl.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S9fb57ce40ef24a91b48e237c1f8cbeccX.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S747e511a6a5a410a9bf3e9a860ad1db5O.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S7751ba5905454b71b1ee4ae77d1db11cg.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S351d89bb00a7452083762fb529a585aaQ.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S5a3fa53813f14ee09b6360ce5a8d8c4fe.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S4bde7ea1e7f84fbca6d5f499c7ccf526m.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S9e91e95b215146b5a249a9b2a825d7f4Q.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sbb385922f1b041719c8c9c7d06ef5e08V.jpg\" slate-data-type=\"image\"\u003e\u003cspan style=\"font-size:18px;font-family:arial, helvetica, sans-serif\"\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"HC-12 V4.0","offer_id":55377120330027,"sku":"14:1202#HC-12 V4.0","price":10.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/S0395476a997a40939375cf123d59ec2fp.webp?v=1788332825","url":"https:\/\/yoeruyo.com\/products\/hc-12-v4-0-si4438-wireless-serial-communication-module-multi-channel-embedded-wireless-data-transmission-module-433-4-483-8-mhz","provider":"Yoeruyo","version":"1.0","type":"link"}