The Pololu Basic 2-Channel SPDT Relay Carrier w/ 12VDC Relays (Assembled) facilitates independent control of two SPDT switches using low-voltage, low-current signals. It includes a carrier PCB with two 12 V relays, terminal blocks for switch connections, and male headers for control connections. The compact design features LEDs for coil actuation and Zener diodes for rapid current decay. The relay control pins are compatible with standard solderless breadboards and servo cable connectors, offering versatile connection options. Note: This product is not certified for high-voltage safety standards and should be handled with caution.