Mini Digital LCD Audio Decibel Tester Sound Noise Level Meter 30dBA-130dBA/ Prohibitions Of Mailing Battery To safeguard aviation security, Hongkong Post does not accept the sending of air mail items (including Speedpost) that contain dangerous articles such as lithium batteries. Therefore, item will not provide any battery. Specifications: Measuring Level: 30 ~ 130 dBA Accuracy: ±1.5 dB Digit
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