Wireless Infrared Passage Detector With 32 Different Melodies White,1 Transmitter And 1 Receiver

store owners during the day, anti-theft protection at night, L door blade / welcome / doorbell / alarm / colorful light / 5 in 1 multi-function light Up to 280 m transmission range in free space 8 chord music chip, 40mm horn, 36 chime melodies Think of your last tuned melody and volume when you turn it off Multicolor LED lights, adjustable brightness , different inputs by different colors 4 adjustable volume levels (high/high/medium/low) from 113 to 25 dB