{"id":15202106605728,"title":"HiLetgo HC-12 433Mhz SI4438 Wireless Serial Port Module 1000M Replace Bluetooth with Antenna","handle":"hiletgo-hc-12-433mhz-si4438-wireless-serial-port-module-1000m-replace-bluetooth-with-antenna","description":"\u003ch3\u003eHiLetgo HC-12 433Mhz SI4438 Wireless Serial Port Module 1000M Replace Bluetooth with Antenna\u003c\/h3\u003e\r\n\u003cp id=\"b\"\u003eDescription: Power supply voltage : 3.3V.(if the modules working long hours in\r\nemission state, suggested that when the power supply voltage is greater than\r\n4.5 V you need concatenating a 1N4007 diode to avoid module built-in LDO got\r\nfever) Default communication distance : about 1000 m (communication distance\r\nis adjustable up to 1000 m, air baud rate 5000 BPS). Default idle current: 16\r\nma (modules in different working mode of different current). Module size:\r\n27.8mm14.4mm4mm. Operating frequency range (433.4 473.0 MHz, as many as 100\r\ncommunication channel) maximum 100 mw fired power (can be set) Module\r\nsupporting software upgrades. Default factory Settings: working mode FU3, baud\r\nrate 9600 BPS, communication channel CH001 (433.4 M) Packing included: 1\r\n433Mhz SI4438 Wireless Module Serial Port 1000M HC-12\u003c\/p\u003e \r\n\r\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\r\n \u003cul class=\"a\"\u003e\r\n \u003cli\u003e433Mhz SI4438 1000M HC-12 Replace Bluetooth Antenna\u003c\/li\u003e\r\n \u003cli\u003ePower supply voltage : 3.3V\u003c\/li\u003e\r\n \u003cli\u003eDefault communication distance: about 1000 meters\u003c\/li\u003e\r\n \u003cli\u003eDefault idle current: 16 ma\u003c\/li\u003e\r\n \u003cli\u003eModule size: 27.8mm*14.4mm*4mm\u003c\/li\u003e\r\n \u003c\/ul\u003e","published_at":"2025-10-17T04:02:25+11:00","created_at":"2025-10-17T04:02:20+11:00","vendor":"HiLetgo","type":"","tags":["electronics_selected_Oct2025"],"price":9600,"price_min":9600,"price_max":9600,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":52929701380256,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B01MYTE1XR","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"HiLetgo HC-12 433Mhz SI4438 Wireless Serial Port Module 1000M Replace Bluetooth with Antenna","public_title":null,"options":["Default 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HC-12 433Mhz SI4438 Wireless Serial Port Module 1000M Replace Bluetooth with Antenna\u003c\/h3\u003e\r\n\u003cp id=\"b\"\u003eDescription: Power supply voltage : 3.3V.(if the modules working long hours in\r\nemission state, suggested that when the power supply voltage is greater than\r\n4.5 V you need concatenating a 1N4007 diode to avoid module built-in LDO got\r\nfever) Default communication distance : about 1000 m (communication distance\r\nis adjustable up to 1000 m, air baud rate 5000 BPS). Default idle current: 16\r\nma (modules in different working mode of different current). Module size:\r\n27.8mm14.4mm4mm. Operating frequency range (433.4 473.0 MHz, as many as 100\r\ncommunication channel) maximum 100 mw fired power (can be set) Module\r\nsupporting software upgrades. Default factory Settings: working mode FU3, baud\r\nrate 9600 BPS, communication channel CH001 (433.4 M) Packing included: 1\r\n433Mhz SI4438 Wireless Module Serial Port 1000M HC-12\u003c\/p\u003e \r\n\r\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\r\n \u003cul class=\"a\"\u003e\r\n \u003cli\u003e433Mhz SI4438 1000M HC-12 Replace Bluetooth Antenna\u003c\/li\u003e\r\n \u003cli\u003ePower supply voltage : 3.3V\u003c\/li\u003e\r\n \u003cli\u003eDefault communication distance: about 1000 meters\u003c\/li\u003e\r\n \u003cli\u003eDefault idle current: 16 ma\u003c\/li\u003e\r\n \u003cli\u003eModule size: 27.8mm*14.4mm*4mm\u003c\/li\u003e\r\n \u003c\/ul\u003e"}