{"title":"RF Link Transmitter - 434MHz","handle":"rf-link-transmitter-434mhz","url":"/products/rf-link-transmitter-434mhz","description":"A simple 434 MHz ASK RF transmitter module for creating basic one-way wireless data links. Breadboard-friendly and easy to pair with a microcontroller, this transmitter works with compatible 434 MHz receiver modules to send data wirelessly at up to 4,800 bps over distances up to 500 ft in ideal conditions.\n\nSince this is a transmitter only, you'll need a separate 434 MHz receiver to complete the link. For bidirectional communication, two transmitter/receiver pairs at different frequencies are required.\n\nKey Features\n\n\n434 MHz Frequency – ISM band operation\n\nUp to 500 ft Range – Under ideal, line-of-sight conditions\n\n4,800 bps Data Rate – Suitable for low-bandwidth sensor data\n\n5 V Supply Voltage – Standard microcontroller compatible\n\nBreadboard-Friendly – Fits directly into standard breadboards\n\n\n\nNote: These modules operate on a common frequency without built-in IDs or pairing, so they will pick up ambient noise. Use a library like VirtualWire to implement filtering and reliable data encoding. Module colour may vary (blue or green) — functionality is identical.\n\n\nIdeal For\n\nSimple one-way wireless data links\nRemote sensor data transmission\nLearning RF communication basics\nWireless trigger and control projects\n\n\nPackage Contents\n\n1× RF Link Transmitter Module – 434 MHz\n\n\nResources\n\nVirtualWire Arduino Library\nDatasheet (PDF)\nKLP Walkthrough Tutorial (PDF)\nDesign Files (GitHub)\n","vendor":"SparkFun","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":12724,"title":"Default Title","sku":"SF-WRL-10534","price":11.28,"on_sale":false,"in_stock":true,"available_quantity":67,"option1":"Default Title"}]}