Home Services Contact Us Specials Job Opportunities Fire Industry News Fire Industry Links How Does It Work ? FAQs In Case Of Fire Training Specials   Det-tronics U9500A Infiniti Combustible Gas Detector Complete with transmitter, j-box & sensor. NEW!! never used $800.00 each: Total of (5) remaining. Ask for Dave. Baltimore . MD . 21224-2095 . 410-285-7272   Need A Job? Sprinkler Service Tech.