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Audio Design Services have a wealth of expertise in providing, designing, commissioning and installing commercial public address systems (PA systems)

"Having listened to the new system this afternoon, the volume, quality and clarity of the sound are better than any stadium I have visited this season"

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Huddersfield Town
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Induction Loop Accessories

Accessories include induction loop testers, listening devices, field strength meters and cables; lectern, ceiling, wall and boundary microphones; rack and wall mount kits.

AHHM Magnetic Field Strength Meter 10-0407-172

The FoSmeter accurately measures the magnetic field strength of an induction loop system. It is calibrated at manufacture for accuracy and linearity using a calibrated magnetic field. Ten LEDs are set out in 3dB increments to indicate magnetic field strength relative to 100mA/m (indicated as 0dB).
The AHHM is a Magnetic Field Strength Meter without Loop Tester.
Also available is the AHHM/H FoSmeter with Loop Tester.
Both the AHHM and the AHHM/H use a 9V PP3-type battery (not supplied).
Customers please note that not all 9V batteries are the same size. This means that some makes are too deep to allow the battery compartment cover to close properly - for example, Duracell Plus and Duracell Ultra. Please check and use a suitable battery make with either the AHHM or AHHM/H.
• The FoSmeter accurately measures the magnetic field strength of an induction loop system.
• Calibrated at manufacture for accuracy and linearity using a calibrated magnetic field.
• Ten LEDs are set out in 3dB increments to indicate magnetic field strength relative to 100mA/m (indicated as 0dB).
• The AHHM is a Magnetic Field Strength Meter without Loop Tester.
• Uses a 9V PP3-type battery (not supplied).