15 second response time Audible alarm Adjustable to your WBGT threshold Indoor/Outdoor settings RS232 computer interface Tripod threads This WBGT heat stress meter works with 2 AAA batteries (included). Battery life is greater than 1,000 hours when using alkaline batteries.

Protective Rubber Boot for Sper Scientific models 800004, 800007, 840045, 840046, 850014.