Master EARTHQUAKE ALARM with led indicator Wireless Sensor Securi...

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Serves as an early warning at the beginning of an earthquake, especially when we sleep When the sensor detects earthquake vibrations, the alarm will trigger with a loud sound (100dB) -Gives certainty to the earthquake, not because we feel dizzy or experience bodily balance disorder SPECIFICATIONS Instructions Red light is on (when an earthquake warning alarm (100dB) sounds Yellow light is on (low battery charge signal. Replace the battery immediately) The sensor is able to detect vibrations in vertical and horizontal directions. When an earthquake vibration is detected, the sensor will return to the "STAND BY" position The alarm sensor is only triggered by movement/vibration, not by sound The sensor sensitivity is set to detect earthquake vibrations For indoor use, avoid getting wet, water and sun exposure The size is 130x93x52 mm Batteries: Use AAA Alkaline batteries x 2 pieces (batteries not included) Avoid out of reach of children.