Huawei VPM220W User Manual page 14

HUAWEI VPM220W Microphone Array
User Guide
When the VPM220W has no battery installed, do not connect its USB port to any power
supply, as doing so may shorten the VPM220W's service life.
Risk of explosion if battery is replaced by an incorrect type.
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Dispose of used batteries according to the instructions.
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Issue 01 (2013-9-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2 Installation
9