SODIAL(R) Voltage Resistance Regulator Solid State Relay SSR 40A 24-380V AC w Heat Sink Product Name : Solid State Relay w Heatsink;Type : SSR-40VA;Material : Relay: Metal, Plastic, Electric Parts,Heat Sink: Aluminum Rated Load Current : 40A;Output Voltage : AC 24-380V;Potentiometer Input Resistance : 500K (Potentiometer is Not Included) Relay Size : 5.7 x 4.2 x 2.5cm / 2.2" x 1.7" x 1" (L*W*T);Heat Sink Size : 8 x 5 x 5cm/ 3.1" x 2" x 2"(L*W*H) Total Size : 8 x 5 x 7.6cm/ 3.1" x 2" x 3"(L*W*H);Main Color : Black, Gray Weight : 200g;Package Content : 1 x Solid State Relay w Heatsink