| Feature: 1. APPLICABLE SCENARIO: Industrial class sound and light integrated alarm is applicable to mine, stone yard, sand yard, forest yard, port machinery, mechanical and electrical industry, large and medium sized driving vehicles, ships, wharfs, belt conveying equipment, large and medium sized crane, construction site, railway crossing, workshops, banks, campuses, factories, shopping malls, security posts, construction sites and other places 2. VOLUME AND TONE OPTIONAL: The volume and tone of the industrial siren alarm can be changed through the side button, 0?180dB adjustable, 6 alarm tone optional. There is also a USB port available, use this USB to set up your voice 3. WATERPROOF ALARM: … | |