主要规格/特殊功能
MD300金属探测器是一种min型手持金属探测器，主要用于安全检查等重要场所，如海关，机场场地
它会发出报警声和振动与低压电源报警
1.循环开关切换声音报警和隐藏振动报警功能
2.灵敏度高，可检测黑色金属和有色金属，使用方便，方便，易于调节
3.当检测到金属具有声音（或振动）和光报警功能时
4.碱性电池报警比例为10〜15％的工作，可工作40小时以上
5. 9V电池到约7V相同的检测范围，当电池电压低时，报警会自动连续

Key specifications/special features
MD300 metal detector is a min-type hand held metal ;detector,mainly for security check-in important places like, customs, airport ant court
It will give an alarm sound and vibration with low voltage power alarm
1. The cycling switch to switch sound alarm and hidden vibration alarm function
2. High sensitivity, can detect ferrous and non-ferrous metals, simple to use, convenient, easy to adjust
3. When metal is detected with the sound (or vibration) and light alarm function
4. The alkaline battery alarm proportion of 10 to 15% of work, can work for 40 hours or more
5. 9V battery to about 7V same detection range, when the battery voltage is low, the alarm will automatically continuous