Features Power supply reversed polarity protection makes it worry free to connect the power supply wrong. Large load capacity, maximum 30A current. Low level signal trigger. Optocoupler isolation, strong driving capability, stable performance. Simple circuit structure, easy to connect wire. Feature: 1. Power supply reversed polarity protection makes it worry free to connect the power supply wrong. 2. Large load capacity, maximum 30A current. 3. Low level signal trigger. 4. Optocoupler isolation, strong driving capability, stable performance. 5. Simple circuit structure, easy to connect wire. Specification: Item Type: Relay Module Operating Voltage: 12VDC Operating Current: 80mA Contacts: A group of 30A normally open + normally closed (isolated from the input) Input: Low level (0V) active, require drive current at least 0.5mA Function: When the input is low level, the relay is closed; when the input is high level or disconnecting (floating), the relay is open. It is mostly used for circuits in which small signal controls high-voltage and high-current, especially suitable for 51 single-chip microcomputer expansion to control equipment work Package List: 2 x Relay Module Package List 2 x Relay Module