The alarm double voltages adaptation ( DC12V / 24V) with highly sensitive detection, alerts and LED warnings for reliabled emergencies response Featuring ABS construction and design, this alarm combines durability housing with low power consumption while maintaining visual through bright red LED indicators Engineered with tool less mounting brackets and universally voltages compatibility, this alarm ensures deployment across electrical systems without professional assistance Perfectly suited for installation in corridors, server room, hotel lobbies, and apartment buildings where fast detection and double sensory warnings is critical for safe evacuation Ideal for homeowners, property managers, and commercial facility operators seek comprehensive alert solution for residential complexes, offices, and hospitality venues, Manufacturer: JunsenF