Smoke Detectors and Fire Alarms Fire Safety, Safety & Security, Simplex, Tools & Home Improvement Simplex 4098-9403 – Heat Detector 200F Review by CheatingMutant June 29, 2018 No Comments This fits your . Make sure this fits by entering your model number. Simplex 4098-9403 Heat Detector 200F 30 Day Returns *12 Month Warranty › See more product details LIFEALARM HT DET 200 FX DIRECT