The SN-390 is a soldering tool manufactured by Proskit that complies with the European Union's Restriction of Hazardous Substances (RoHS) Directive. It is a professional grade soldering tool designed for a variety of electrical and electronics projects. It features a lightweight, ergonomic design for comfortable use, adjustable temperature control for precise results, and a detachable power cord for added flexibility. The SN-390 also has a durable ceramic heater element for long-term use, an internal heat shield to protect against damage, and a safety lock switch to prevent accidental starts.