Up to 120–160 meters in open sight.
JDY-040/JDY-041 module. JDY-040 module Serial Wireless transceiver info. PLEASE NOTE: this module is 3v3 limited - don't apply 5v. Lesson 36: Get Started with Bluetooth Module jdy40 arduino example best
receivedData = ""; else receivedData += c; Up to 120–160 meters in open sight
// Parse your data here if (receivedData.startsWith("TEMP:")) // Extract and act on data else receivedData += c