The Addressable Sounder Base 6" (PAD100-SB) is a sounder base that may be utilized in a variety of applications. The base has a locking feature for the sensor that may be used or removed in the field. Once the head is removed, the sounder is accessible in the bottom of the unit.Main FeaturesTerminals accept 22 to 12 AWG wire sizesSupports Class A, Class X and Class B wiringDoes not require SLC Loop addressUUKL Listed for Smoke Control