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Color: Black
Differential input voltage: ±40mV
Window and door magnetic switching alarm
The 2 or 4-quadrant multiplying makes this device a sound choice for many microprocessor-controlled gain-setting and signal-control applications
DC Barrel Jack ( Male) knock sensor Color: BlackIntroduction : DC Barrel Jack ( female) is a 5. 52. 1mm center positive Male barrel jack connector. You can use it when you want a DC power connector that runs off a battery pack or wired power supply. It have a screw terminal block on the other. The terminals are labeled with positive negative. So you can hook up your selected power supply to the terminal points and you have DC power Plug with the output of your choice. You can then fit a female 2.
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