XH-M131 DC 12V Light Control Switch Photoresistor Relay Module FS-TH9X 2.4GHz 9CH Upgrade Transmitter with FS-IA10B Receiver The KY-039 is a compact

The KY-039 is a compact optical heartbeat detection sensor designed to measure pulse rates through finger placement

Temperature Range - Industrial grade

and EMI available for your convenience

Keep in original packaging if possible

Built-in Protection - Overcurrent

XH-M131 DC 12V Light Control Switch Photoresistor Relay Module FS-TH9X 2.4GHz 9CH Upgrade Transmitter with FS-IA10B Receiver The KY-039 is a compactXH M131 DC 12V Light Control Switch Photoresistor Relay Module Quality electronics from The Engineer Store, Bengaluru. Fast shipping, 7 day warranty on manufacturing defects, expert support. Product Overview The XH M131 is a compact, intelligent light control module featuring an integrated photoresistor (light sensor) and relay switching mechanism. This DC 12V module automatically detects ambient light levels and triggers relay output, making it ideal