Specification Brand : Aexit BulletPoint1 : Product Name : Solid State Relay + Heat Sink;Model : SSR-50DA BulletPoint2 : Material : Metal, Aluminum, Plastic;Rated Load Current : 50A BulletPoint3 : Input : DC 3-32V;Output : AC 24-480V BulletPoint4 : Total Size (Approx.) : 8 x 5 x 8cm / 3.1" x 1.9" x 3.1" (L * W * H );Color : Black, Clear, White BulletPoint5 : Weight : 194g;Package Content : 1 x Solid State Relay,1 x Heat Sink ItemName : Aexit DC to Relays AC 3-32VDC 24-480VAC Solid State Relay SSR 50A SSR-50DA w Accessory Power Heat Sink ItemTypeKeyword : solid-state-relays Manufacturer : Aexit Material : Other MeasurementSystem : Imperial ModelNumber : modle PartNumber : f190412ae001679 ProductDescription : Solid State Relay perfect for automatic process control application, a must component for temperature controller and other machinery control system. Come with a aluminum heat sink provides long lasting usage, it will help dissipate the heat and protect your relay.