Ensure continuous power monitoring and immediate alerts with this advanced Power Failure Alarm Sensor, designed to provide reliable protection for various environments including computer rooms, electrician duty rooms, power companies, and residential households. Crafted from durable ABS material, this power failure alarm offers a comprehensive solution to detect power outages and cable disconnections promptly, featuring a loud whistle alarm that continues until power is restored or the battery is depleted. Key Features: · Clear Power Indicator: Easily monitor the power supply status of the grid at a glance, ensuring you are always informed of the current power condition. · Loud Alarm Mode: Emits a powerful whistle alarm (≥115 decibels) instantly when the power grid is cut off or the power supply cable is disconnected, providing timely warnings to prevent potential issues. · Wide Voltage Monitoring Range: Suitable for use in both urban and remote areas with unstable power supply voltages, expanding its applicability across diverse environments. · Battery Undervoltage Alarm: Detects and alerts on battery failures to prevent false alarms, ensuring reliable operation without unnecessary disturbances. · Convenient Battery Replacement: Features a drawer-type battery cover switch that allows for quick and easy battery replacement, minimizing downtime. · Automatic Trickle Charger: Equipped with a built-in automatic trickle charger compatible with both regular and rechargeable batteries. Rechargeable batteries can provide standby life up to 10 years, while normal batteries last up to 2 years. Specifications: · Material: ABS · Color: As shown in picture · Battery Model: DC 9V (1 GF22 battery, not included) · Alarm Volume: ≥115 decibels · Working Environment Temperature: -30°C to +60°C · Relative Humidity: ≤85% RH · Package Weight: Approx. 74g / 2.6oz Package Includes: · 1 x Power Alarm Sensor (Battery not included) This Power Failure Alarm Sensor is an essential device for safeguarding your electrical systems by providing immediate alerts during power interruptions or cable faults. Its robust design, high alarm volume, and long battery life options make it a dependable choice for ensuring safety and operational continuity in both residential and professional settings.