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虎仔牌J-1302型声控壁挂止吠器,是通过狗叫声来触发超声波电路工作,发出5秒钟刺耳的超声波(人听不到,狗能听到),使得狗儿感觉很不舒服(对狗绝对没有伤害)。经过多次反复,狗儿便建立起条件反射,知道这种声波是由于自己的狂吠才出现的,之后就不再轻易乱叫了。虎仔牌J-1302采用声音累加(积分电路)的触发方式,即单声狗叫或周围有短促的噪音不会触发,一般情况下,只有连续三声以上狗叫才会触发,这样就有效的滤除了因为环境杂音或狗狗偶尔的叫声造成的误触发。但由于环境噪音、狗的嗓门大小、狗距机器的距离的不确定性。所说的“连续三声以上狗叫才会触发”也不是一定的,但这不影响使用效果。J-1302由于需要长时间处于通电状态,若使用电池供电,则需频繁的更换电池。所以采用市电供电,随机配有电源适配器。
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