=A35.99 ONE IS A CO PATCH ONLY; useful for Coroners, to confirm cause of
death!
It just changes colour, but gives no audible alarm.
B& Q have good range of electronic CO
alarms.
http://www.diy.com/diy/jsp/bq/produc...339&entryFlag=
=3Dfalse&PRODID=3D167533
or Argos:
http://www.argos.co.uk/webapp/wcs/st...y?storeId=3D1=
0001&langId=3D-1&catalogId=3D3151&productId=3D129510&clickfrom=3D name