Paradox Mini: Grade 2 bidirectional wireless magnetic door and window contact, ultra-compact size. LED indicator for open, closed and connection status, temperature sensor. Includes 1 CR123A lithium battery. 5-year battery life, for Paradox M systems. Dimensions: 2 x 9 x 2 cm. Certifications: CE, EN 50131-2-6, EN 50131-6, EN 50131-5-3, FCC 15.247