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Features: Audio Visual Alarm with IR Remote Adjustable Sound(HIS-SF-103) Introduction This product is a kind of alarm device giving warning signals through audible and visual alarm. When HIS-SF-503 power on, alarm light will flash and it will have voice alert. This device is applied in large hoisting machinery, engineering vehicles, banks, government agencies, buildings, villas, forest park, border defense system and security service company and other area Features Support for loading MP3 audio playing, good sound quality. Replace alarm sound through USB disk. Can select alarm sound or adjust volume by infrared remote controller. Wide voltage range of power supply. Alarm light and warning signal are integrate together easy to install. Weather-proof circuit technology waterproof and dust-proof. *Weight: 1.1 kg *Output Power: 30 W *Sound Noise: 120 db *Built-in SPI Memory: 4M bit~64M bit *Voice Length: 2000 seconds max *Body Material: Mild steel