Home Power Failure Alarm – High-Volume Warning Device for Power Outage Detection This alarm is designed to detect power failures and provide an immediate audible alert when power is lost. It connects in parallel with the main power line or meter and triggers an alarm if the line is disconnected or the meter malfunctions. Reliable Performance: Features an automatic charging circuit compatible with both standard and rechargeable batteries. When using rechargeable batteries, standby life can reach up to 10 years, minimizing false alarms caused by battery depletion. Wide Voltage Compatibility: Operates reliably within an AC input range of 175V–265V, making it suitable for use in urban and suburban environments where voltage fluctuations may occur. Long Battery Life: Powered by two batteries—standard GF22 or rechargeable types. Standard batteries provide approximately 2 years of operation; rechargeable batteries support up to 10 years of service life with proper maintenance. Versatile Applications: Ideal for monitoring critical locations such as server rooms, electrical distribution panels, substations, and residential main power entry points. Helps detect unauthorized disconnections or tampering with power lines or connected equipment.