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笔者为鱼塘设置了一个防盗报警器,经实际使用效果甚佳。本装置具有成本低,制作容易,报警声音宏亮,可监防的范
I set up a fish pond burglar alarm, the actual use of the effect is very good. The device has low cost, easy production, loud and clear alarm sounds, can guard against the fan