DISC incorporates a 360?detection pattern, floor coverage up to 11 m (36 ft) diameter, adjustable alternate polarity pulse counter, and an advanced RFI protection. FEATURES * Modern, elegant design * 25.5 mm (1in) profile, 86 mm (3-3/8 in) diameter * Up to 11 m (36 ft) diameter floor coverage * Selectable pulse count * SMD technology