http://uk.farnell.com/jsp/Industrial+Controls+&+Automation/Humidity+&+Rain/HONEYWELL+S&C/HIH-4000-001/displayProduct.jsp?sku=1187547&_requestid=78603 From Farnell, "HIH-4000-001 — HONEYWELL S&C — HUMIDITY SENSOR, 2.54MM SIP", Farnell order code 1187547 Used to detect that...