This is a Bosch mini relay, part number 0986AH0300. It operates at 12V and has a switching current rating of 20A. The relay is designed for durability and robustness, capable of up to 250,000 switching cycles. It features a temperature-resistant design, tolerating ambient temperatures from -40°C to +85°C. The housing has an IP5K4 rating, and the terminals have an IP20 rating, ensuring protection against dust and water ingress. It has 4 pins and is a normally open relay switch.