Manufacturer iEi Electronics / Linear Model MiniMax 3 SYS – 0-205601 Dimensions (Enclosure) Height: 3.56 (9.04cm), Width: 11.29 (28.67 cm), Length: 11.31 (28.7 cm), Material: 19 gauge steel Power Requirements Main Relay: 12-24 VAC/DC, 2A (max. contact current) Temperature/Humidity -20F to 130F (-28C to 54C) Communication RS-485 Cable, 24AWG, shielded, two twisted-pair telephone cable with a shunt capacitance of 16 pF/Ft (required only when using software) Weight 13.0000