I installed a 15-20 sensor Hanwell system [top of line wireless] at the
Glasgow School of Art in Scotland.  It was used in three locations for T,
%RH, lux/UV and wall-moisture content.  All data was sent to a dedicated
[could have been networked] very basic PC in the Curators office, but it
could have been the Building Manager or Conservation.  The only issue was
battery life.  Eventually, I hardwired the power for the critical units,
very simple, the sensors were all mounted [permanently] on the wall anyway.

Hanwell was and still is the best, but you'll have to pay for it.  Someone
will have to install and program the system; four sensors could be pretty
simple if there are no building complications.  That is, long wireless runs
in buildings with lots of metal, this will require dedicated Hanwell
repeaters.  Hanwell has all the wireless and telephone notification perks,
along with the ability to interface with modern HVAC systems in real time.
Architects love the stuff and the build systems for the Royal Navy, or did
do so.  Excellent stuff but you pay for it.

There are plenty of rock-bottom-price options, but none with the
extensibility and interactivity.  Hanwell's Home Office in the UK is a true
pleasure to work with.  We even developed and in-wall moisture monitor for
efflorescing salts in century old concrete stairwells.


Tim Vitale

Paper & Photography Conservation
Oriental Scrolls & Screens in the Western Manner
Digital Facsimiles & Digital Restoration
Remastering still Film to Digital [distorted film too]
Archive & Collection Surveys
Video & Film Preservation Surveys
Preservation & Imaging Consulting

Vitale Art Conservation
2407 Telegraph Avenue #312
Oakland, CA 94612

510-594-8277
510-508-4162 cell
510-891-1602 fax
[log in to unmask]

Website: http://vitaleartconservation.com/
Resume: http://vitaleartconservation.com/vitale_long-resume_v21.pdf
Video Preservation: http://videopreservation.conservation-us.org/ (2007)
Albumen Photography website: http://albumen.conservation-us.org/ (2001)
Brief History of Imaging Tech: http://vitaleartconservation.com/bhit.pdf

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