The Pololu basic 2-channel relay carrier modules allow simple, independent control of two single-pole, double-throw (SPDT) switches from low-voltage, low-current control signals. This item includes the basic carrier PCB with two soldered-in 5 V relays, 5mm-pitch terminal blocks for the switch connections, and a top-entry JST SH-style connector for the control connections that works with our selection of 4-pin JST SH-style cables. The included power relays are Omron G5LE-14-DC5 and are rated for up to 10 A under most conditions.