Simplex 4098‑9773 TrueAlarm CO Sensor Base and 49 similar items

Simplex 4098?9773 TrueAlarm CO Sensor Base w/ 520 Hz Sounder This item is used and untested. This item comes with no accessories or sensor head.Please see photos for what you see is what you will receive. Simplex 4098?9773 TrueAlarm carbon monoxide detector base with integrated 520 Hz low?frequency sounder, sold used and untested as base?only. This addressable CO/sounder base works with compatible TrueAlarm sensor heads to provide CO monitoring and audible notification over a single system address using the IDNet loop, meeting NFPA 72 low?frequency requirements for sleeping areas. Item Specifics: Brand: Simplex / Johnson Controls. Model: 4098?9773. Type: Addressable CO detector base with built?in 520 Hz sounder. Compatibility: TrueAlarm sensor heads such as 4098?9714 (photo), 4098?9754 (multi?sensor), 4098?9733 (heat) ? sensor head not included. Sounder output: 520 Hz, approx. 85 dBA at 10 ft, low?frequency for sleeping areas. Communication: IDNet addressable loop (one system address per base). Power: IDNet for supervision plus 24 VDC/NAC for sounder (panel dependent). Condition: Used and untested (base only; no sensor head or accessories). Quantity: 1 base SHELF: FA-C AP