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The Pololu 2-CH SPDT RELAY CARRIER with 12VDC RELAY is a compact, 5V-powered relay board with two 5A single-pole, double-throw (SPDT) relays for switching high-amperage loads. The relays have a 12 VDC coil and are secured onto the board by three industry-standard aerospace-grade screws. Each of the two channels is rated up to 5A at 30 VDC/VAC, making them suitable for a wide range of applications including switching power supplies, motors, pumps, and other high-current devices. The relay channel pins are accessible from the top side of the board and feature power and ground pins for convenient electrical connection, as well as DPDT switch pins for interfacing with a microcontroller. The board also features two screw terminals for power input, two LEDs for indicating the relays’ current state, and on-board mounting hardware for easy integration into many projects.