Alarm Function: Primarily used for power monitoring. Connecting the alarm in parallel with an outdoor cable or meter will instantly alert you to disconnections or meter damage, providing a crucial safety warning. Stable Performance: This power alarm uses both standard and rechargeable batteries. Rechargeable batteries provide up to 10 years of standby time, preventing undetected false alarms. Wide Compatibility & Voltage: Designed for long-term use under AC 175V~265V. Its compatibility ensures reliable operation in both urban and suburban areas with less stable voltage. Long Standby Time & Durability: The alarm uses two batteries (standard GF22 or rechargeable). Standard batteries last approximately 2 years, while rechargeable batteries offer a significantly longer lifespan (up to 10 years of recyclable use). Versatile Applications: Ideal for monitoring computer rooms, power grids, substations, household electrical entrances, etc., helping detect theft of electrical wires or appliances.