For making footfall noise transmission measurements in buildings as set out in International and National Standards.

• Impact sound transmission testing according to ISO 10140-5. ISO 16283-2 and the old ISO 140-6, -7,-8 as well as ASTM E492-04 and ASTM E1007-04e1
• Determination of single number quantity index Ln,w, in accordance with ISO 717-2 and ASTM E-989
• Remote operation from hand switch or PC
• Mains or battery operation
• Powered from 85-264 volt AC main supply. Built in Lithium Ion rechargeable batteries.
• Battery capacity: Typical 1 hour with intermittent use and 45 minutes of continues operation.
• Battery de-rating: <5% loss in capacity per 100 discharge/charge cycles.
• Charging time: 2 hours
• Compact
• Low weight 10 kg (22 lb) incl. battery and wireless remote option
• Rugged construction
• Five hammers each having a mass of 500 g falling from a height of 40 mm (adjustable)
• Tapping sequence of 10 impacts per second, rpm controlled via servo feedback loop
• Built in self check of hammer fall speed, and tapping sequence.
• Retractable feet
• Dimensions feet retracted: 165 x 230 x 495 mm
• Dimensions feet extended: 265 x 230 x 495 mm