7 pieces relay 5V KY 019 1 channel module board shield high level trigger with for Arduino and Raspberry Pi PIC AVR DSP ARM

The relay module is used to control AC circuits and switches them on or off for max. 50V AC / 5A or 30V DC / 5A. The 4-channel relay module is equipped with transistors, diodes and optocouplers to ensure higher loads. Thanks to its compact size, the 1-channel relay can be used in almost any project. Each channel of the module is additionally connected to an LED that indicates the switching state of the relay, each group has a simple 3-wire structure for output, with 6 reserved output terminals. The relay can not only be used as a single-chip development board module, but also the module is equipped with a generously sized relay to reliably perform many switching operations. Full SMT components, most reasonable drive circuit design, with 8050 transistor to drive relay action. The KY-019 relay is used to control AC circuits.