System Sensor 4WT-B This 4-wire smoke detector also has a thermal heat sensor. Brand System SensorModel 4WT-BManufacturer System SensorType Smoke/Heat Detector
Radionics D571S Category : OtherI always associate these re-branded Wheelock AS’s with Walmart. I’m sure others out there can also understand.
System Sensor CH24MC Category : System SensorThis alarm just looks like a slightly smaller version of the SpectrAlert Classic speaker/strobe.