PROTECT A/S specializes in active security systems designed to protect homes and businesses from burglary, theft, and vandalism. Its core products are PROTECT™ security fog generators, which rapidly fill a protected space with dense fog when an intrusion occurs, obstructing visibility and making it difficult for intruders to steal or damage property. The range is intended for varied settings, from private residences and retail premises to larger commercial spaces and warehouses. Many models can be discreetly installed behind walls or above ceilings.

The company also serves alarm installers, offering security fog systems they can provide to their own customers. PROTECT highlights that its fog leaves no residue and is harmless to people, animals, clothing, furniture, and electrical equipment. The site notes more than 150,000 units installed, international approvals, and a five-year warranty for most products. Additional services and resources include technical support, maintenance and warranty information, product datasheets, installation guides, documentation, and mobile applications. In Portugal, products are available through official distributors Casmar Electrónica and EET Portugal.