SecurityMan SM-821DTH, Руководство пользователя

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• DO NOT touch, shake or hold the antenna. Touching, shaking or holing the antenna might
influence the receiving of electromagnetic wave, and thereby influence the receiving effect.
• DO NOT
use the camera in complex environment, the obstruction of stumbling block will
affect the electromagnetic wave and influence the receiving range. Wall, tree and other stum-
bling block might absorb, reflect the electromagnetic wave, and influence the receiving range.
• DO NOT
use the camera in the places which are covered with metal. The around metal,
such as elevator and cabin, might shield the electromagnetic wave, and result in inability to
receive signals.