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Features: 1. With isolation groove in control area and load area. Specification: 1. VCC: Power interface ,5V Note: 1. High level flip-flops shows that there are trigger mode of the voltage between the signal input terminal and the ground; That is to say it is a way of short circuit trigger between signal input and VCC positive pole. 2. Low level flip-flops shows that there are voltage for OV trigger mode between the signal input terminal and the ground. In a word, it is a way of short circuit trigger between signal input and GND negative pole. Package Included: 1 Channel 5V Relay Module Shield
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