{"product_id":"geekcreit-hc-12-433mhz-si4463-wireless-serial-module-wireless-transceiver-transmission-serial-comm","title":"Geekcreit HC-12 433MHz SI4463 Wireless Serial Module Wireless Transceiver Transmission Serial Comm","description":"\u003cp\u003e\u003c\/p\u003e  \u003cp\u003e\u003c\/p\u003e  \u003cp\u003eUpdate information: Change chip from SI4463 to SI4438 (Shipped from 11.26.2019)\u003cbr\u003e \u003cbr\u003e \u003cstrong\u003e\u003cu\u003eNote: HC-11 cannot communicate with the HC-12, they work independently, used in pairs.\u003c\/u\u003e\u003cbr\u003e \u003cbr\u003e Features:\u003c\/strong\u003e\u003cbr\u003e \u003cbr\u003e 1. Supply voltage: 3.2V~5.5V. (If the module you want to work long hours in the emission state, it is recommended that when the supply voltage exceeds 4.5V threaded a 1N4007 diode to prevent module built-in LDO heated)\u003cbr\u003e 2. Default address range (open field test): About 600m (maximum communication distance adjustable reach 1000m, the baud rate is 500bps)\u003cbr\u003e 3. Default idle current: 16MA (In different working modes operating current is different)\u003cbr\u003e 4. Module dimensions: 27.8 x 14.4 x 4mm\u003cbr\u003e 5. Operating frequency range: 433.4-473.0MHz, up to 100 channels of communication\u003cbr\u003e 6. The maximum transmit power: 100mW (settable)\u003cbr\u003e 7. Module support software upgrade\u003cbr\u003e 8. Default factory settings: Mode FU3, baud rate is 9600bps, communication channels CH001 (433.4M)\u003cbr\u003e?????9. Four transparent transmission modes, adapt to different application occasions.\u003c\/p\u003e  \u003cp\u003e10. Built-in MCU, free of programming, only need to communicate with external devices through the serial port\u003c\/p\u003e  \u003cp\u003e11. Unlimited number of bytes sent in a single time (FU1 \/ FU3 mode)\u003c\/p\u003e  \u003cp\u003e12. The module supports one-to-one, one-to-many, many-to-one, many-to-many connection transparent transmission\u003c\/p\u003e  \u003cp\u003e \u003cbr\u003e \u003c\/p\u003e  \u003ctable border=\"1\" cellpadding=\"0\" cellspacing=\"0\" height=\"152\" style=\"border-collapse:collapse;width:\" width=\"742\"\u003e    \u003ccolgroup\u003e     \u003ccol style=\"width:126.75pt;\" width=\"169\"\u003e     \u003ccol style=\"width:129.00pt;\" width=\"172\"\u003e     \u003ccol style=\"width:169.50pt;\" width=\"226\"\u003e     \u003ccol style=\"width:131.25pt;\" width=\"175\"\u003e    \u003c\/colgroup\u003e    \u003ctbody\u003e     \u003ctr height=\"19\" style=\"height:14.25pt;\"\u003e      \u003ctd class=\"et3\" height=\"19\" style=\"height:14.25pt;width:126.75pt;\" width=\"169\"\u003e Parameter name\u003c\/td\u003e      \u003ctd class=\"et3\" style=\"width:129.00pt;\" width=\"172\"\u003e Reference\u003c\/td\u003e      \u003ctd class=\"et3\" style=\"width:169.50pt;\" width=\"226\"\u003e Parameter name\u003c\/td\u003e      \u003ctd class=\"et4\" style=\"width:131.25pt;\" width=\"175\"\u003e Reference\u003c\/td\u003e     \u003c\/tr\u003e     \u003ctr height=\"19\" style=\"height:14.25pt;\"\u003e      \u003ctd class=\"et3\" height=\"19\" style=\"height:14.25pt;width:126.75pt;\" width=\"169\"\u003e Model\u003c\/td\u003e      \u003ctd class=\"et3\" style=\"width:129.00pt;\" width=\"172\"\u003e HC-12\u003c\/td\u003e      \u003ctd class=\"et3\" style=\"width:169.50pt;\" width=\"226\"\u003e Module size\u003c\/td\u003e      \u003ctd class=\"et4\" style=\"width:131.25pt;\" width=\"175\"\u003e 27.4 x13.2 x 4mm\u003c\/td\u003e     \u003c\/tr\u003e     \u003ctr height=\"19\" style=\"height:14.25pt;\"\u003e      \u003ctd class=\"et3\" height=\"19\" style=\"height:14.25pt;width:126.75pt;\" width=\"169\"\u003e Frequency Range\u003c\/td\u003e      \u003ctd class=\"et3\" style=\"width:129.00pt;\" width=\"172\"\u003e 433.4 ~ 473.0MHZ\u003c\/td\u003e      \u003ctd class=\"et3\" style=\"width:169.50pt;\" width=\"226\"\u003e Working frequency\u003c\/td\u003e      \u003ctd class=\"et4\" style=\"width:131.25pt;\" width=\"175\"\u003e 433.4-473.0MHz\u003c\/td\u003e     \u003c\/tr\u003e     \u003ctr height=\"19\" style=\"height:14.25pt;\"\u003e      \u003ctd class=\"et3\" height=\"19\" style=\"height:14.25pt;width:126.75pt;\" width=\"169\"\u003e Communication Interface\u003c\/td\u003e      \u003ctd class=\"et5\" style=\"width:129.00pt;\" width=\"172\"\u003e UART 3.3V \/ 5V TTL level\u003c\/td\u003e      \u003ctd class=\"et6\" style=\"width:169.50pt;\" width=\"226\"\u003e Antenna interface\u003c\/td\u003e      \u003ctd class=\"et7\" style=\"width:131.25pt;\" width=\"175\"\u003e Spring antenna \/ antenna socket\u003c\/td\u003e     \u003c\/tr\u003e     \u003ctr height=\"19\" style=\"height:14.25pt;\"\u003e      \u003ctd class=\"et3\" height=\"19\" style=\"height:14.25pt;width:126.75pt;\" width=\"169\"\u003e Operating Voltage\u003c\/td\u003e      \u003ctd class=\"et3\" style=\"width:129.00pt;\" width=\"172\"\u003e 3.2-5.5V\u003c\/td\u003e      \u003ctd class=\"et3\" style=\"width:169.50pt;\" width=\"226\"\u003e Idle current\u003c\/td\u003e      \u003ctd class=\"et4\" style=\"width:131.25pt;\" width=\"175\"\u003e 16mA\u003c\/td\u003e     \u003c\/tr\u003e     \u003ctr height=\"19\" style=\"height:14.25pt;\"\u003e      \u003ctd class=\"et3\" height=\"19\" style=\"height:14.25pt;width:126.75pt;\" width=\"169\"\u003e Communication level\u003c\/td\u003e      \u003ctd class=\"et3\" style=\"width:129.00pt;\" width=\"172\"\u003e 3.3V \/ 5V level\u003c\/td\u003e      \u003ctd class=\"et3\" style=\"width:169.50pt;\" width=\"226\"\u003e Working humidity\u003c\/td\u003e      \u003ctd class=\"et4\" style=\"width:131.25pt;\" width=\"175\"\u003e 10% ~ 90%\u003c\/td\u003e     \u003c\/tr\u003e     \u003ctr height=\"19\" style=\"height:14.25pt;\"\u003e      \u003ctd class=\"et3\" height=\"19\" style=\"height:14.25pt;width:126.75pt;\" width=\"169\"\u003e Transmit power\u003c\/td\u003e      \u003ctd class=\"et3\" style=\"width:129.00pt;\" width=\"172\"\u003e 20dBm (MAX)\u003c\/td\u003e      \u003ctd class=\"et3\" style=\"width:169.50pt;\" width=\"226\"\u003e Operating temperature\u003c\/td\u003e      \u003ctd class=\"et4\" style=\"width:131.25pt;\" width=\"175\"\u003e -25 ?￣ C ~ + 75 ?￣ C\u003c\/td\u003e     \u003c\/tr\u003e     \u003ctr height=\"19\" style=\"height:14.25pt;\"\u003e      \u003ctd class=\"et8\" height=\"19\" style=\"height:14.25pt;width:126.75pt;\" width=\"169\"\u003e Reference distance\u003c\/td\u003e      \u003ctd class=\"et8\" style=\"width:129.00pt;\" width=\"172\"\u003e 1000m\u003c\/td\u003e      \u003ctd class=\"et8\" style=\"width:169.50pt;\" width=\"226\"\u003e storage temperature\u003c\/td\u003e      \u003ctd class=\"et9\" style=\"width:131.25pt;\" width=\"175\"\u003e -40 ?￣ C ~ + 85 ?￣ C\u003c\/td\u003e     \u003c\/tr\u003e    \u003c\/tbody\u003e   \u003c\/table\u003e   \u003cbr\u003e   \u003cstrong\u003eAT command set:\u003c\/strong\u003e  \u003cbr\u003e ?  \u003cbr\u003e Module parameters, AT command set  \u003cbr\u003e AT command is used to set the parameters of the function module and switching modules need to exit the setting mode after setting to take effect. Meanwhile, modify the parameters and functions, power-down is not lost.  \u003cbr\u003e ?  \u003cbr\u003e   \u003cu\u003e\u003cstrong\u003eEnter the command mode:\u003c\/strong\u003e\u003c\/u\u003e  \u003cbr\u003e   \u003cbr\u003e The first entry mode - normal use (has the power) in the first 5-pin SET is set low;  \u003cbr\u003e The second mode of entry - power, 5th pin SET again first set low on power.  \u003cbr\u003e Both methods can make the module into AT command mode, release (SET pin is not connected low) to exit command mode. After the exit command mode, if you change the module function, the function will be cut to the appropriate state.  \u003cbr\u003e The second way is fixed in serial format 9600, N, 1 into the AT.  \u003cbr\u003e ?  \u003cbr\u003e   \u003cstrong\u003e\u003cu\u003eInstructions:\u003c\/u\u003e\u003c\/strong\u003e  \u003cbr\u003e   \u003cbr\u003e 1. AT  \u003cbr\u003e Test instructions  \u003cbr\u003e Example: Send module commands AT, the module returns OK.  \u003cbr\u003e ?  \u003cbr\u003e 2. AT + Bxxxx  \u003cbr\u003e Change the serial port baud rate command. You can set the baud rate is 1200bps, 2400bps, 4800bps, 9600bps, 19200bps, 38400bps, 57600bps and 115200bps. The factory default is 9600bps.  \u003cbr\u003e Example: Set the module serial port baud rate is 19200bps, please send module command AT + B19200, the module returns  \u003cbr\u003e OK + B19200.  \u003cbr\u003e ?  \u003cbr\u003e 3. AT + Cxxx  \u003cbr\u003e Change the wireless communication channel, selectable from 001 to 127 (more than 100 radio channels after the communication distance not guaranteed). The default value is 001 radio channels, operating frequency is 433.4MHz. Step channel is 400KHz, the operating frequency of the channel 100 is 473.0 MHz.  \u003cbr\u003e ?  \u003cbr\u003e Example:  \u003cbr\u003e Set module to channel 21, please send module command AT + C021, the module returns OK + C021.  \u003cbr\u003e After exiting the command mode, the module in the first 21 channels, operating frequency is 441.4 MHz.  \u003cbr\u003e Note: Because the wireless receiver module sensitivity HC-12 is relatively high, the baud rate is greater than when air 58000 bps, 5 must be shifted to the adjacent channel use. When the air baud rate is not greater than 58000 bps, if the short distance (10 meters) communication, but also need to stagger five adjacent channel use.  \u003cbr\u003e ?  \u003cbr\u003e 4. AT + FUx  \u003cbr\u003e   \u003cbr\u003e Change the module serial pass-through mode, there FU1, FU2 and FU3 three modes. Module default mode is FU3, two serial pass-through mode module must be set to the same communication. See detailed above, wireless serial pass-through part.  \u003cbr\u003e","brand":"ZHIQIAN","offers":[{"title":"Default Title","offer_id":43932660072643,"sku":"ZHIQIAN-027771","price":379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0661\/4355\/1683\/files\/eb675e27-3722-4f20-a9e8-d7ec04ace742.jpg?v=1725862022","url":"https:\/\/wrsss.com\/products\/geekcreit-hc-12-433mhz-si4463-wireless-serial-module-wireless-transceiver-transmission-serial-comm","provider":"Wrsss","version":"1.0","type":"link"}