We investigated the same, but haven't had the opportunity to try anything. So, no opinion on how well it works, especially in a HAST environment. But, maybe it will work for you. Good Luck, Glenn Source: Honeywell Micro Switch Sensing and Control Temperature and Moisture Sensors HyCal Sensing Products (818) 444-4000 Get Your Private, Free Email at http://www.hotmail.com ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################