Simplex 4098-9404 Electronic Direct Connect Heat DetectorThe Simplex 4098 9404 is an Electronic Heat Detector for Two Wire Direct Connection. Direct connecting design: Wiring attaches directly to detector terminals; Detector mounts onto mechanical adapter plate (included) . For ceiling or wall mounting. Provides Fixed Temp (200F) and Rate of rise heat detection. Rate of Rise rate meets FM requirements for operation between 15 and 25 F min (8. 33 and 13. 88 C min) . Voltage: 15 to 32 VDC, filtered DC with