The Pololu Basic SPDT Relay Carrier w/ 5VDC Relay (Assembled) facilitates the control of a single-pole, double-throw switch using low-voltage, low-current signals. It features a compact design with a soldered 5 V relay, terminal blocks for switch connections, and a male header for control connections. The board is compatible with standard solderless breadboards and female servo cable connectors, offering flexibility in application. It includes two LEDs for coil actuation indication and a Zener diode for fast current decay. Note: This product is not certified for high-voltage safety standards and should be used with caution above 30 V.