Image is Representational - See Manufacturer Specs | DC/DC Converter - 1 Output - 30 W - 12 V - 2.5 A. The RSD-30G-12 is DC/DC converter with 86.5% efficiency. Dimensions of this converter are 4.45 L x 2.36 W x 0.98 H (113.0mm x 60.0mm x 25.0mm). Operating temperature range is from -40�C to 70�C (with derating).