Manufacturer KEYSCAN Model K-SMART Reader Dimensions Mullion – 4.5 (11.43 cm) x 1.5 (3.8 cm) x 0.62 (1.6 cm) or Switch Plate 4.5 (11.43 cm) x 3 (7.62 cm) x 0.62 (1.6 cm) Operating Temperature – 40 C to 65 C (- 40 F to 149 F) Voltage Input 12 VDC Cable 6 conductor shielded 22 AWG Read Range Off metal – up to 2 (5.1 cm) Warranty Limited Warranty Weight 2.5000