HUAYANG01 [2023 new HOT FASHION] Detector Earthquake Get Early Warning of Impending Earthquake quake alarms LE

Detector Earthquake Get Early Warning of Impending Earthquake quake alarms. Tips: This alarm is the principle of induction shake alarm occurs, so please be installed in an environment without external interference, such as your own home in a seaside town, or if you live in a ship on the sea, similar to the kind of living environment in itself causes the non-seismic shaking, then you are not home is not suitable for such a use of the instrument. Please buyer friends before you buy, measure around the environment. Note: Because the battery does not allow send by normal post, we will send without the batteries, you should buy it by yourself, please understand about it, thank you. Technical Parameters: Operating voltage: DC 9V9V alkaline battery ship without the battery. Alarm sound pressure: 120dB. Induction method: vibrating alarm. Start delay: 15 seconds. Alarm delay: 30 seconds. Installation: Magnetic back can also be hung. Dimensions: 9055 27mm. Instructions: The right of the toggle s