The 4WTA-B is a 4-wire, photoelectric i3 smoke detector with thermal sensor and built-in sounder.
The SpectrAlert Advance SA-WBBW is a white separate ship, wall-mount, outdoor back box.
The OSI-R-SS is a 4-wire, single-ended, reflected type beam smoke detector that includes an 8" reflector and an integral sensitivity test.
The 4WTAR-B is a 4-wire, photoelectric i3 smoke detector with thermal sensor, built-in sounder, and Form C relay.
Low Frequency (520 Hz) Intelligent, Syncronizable, Sounder Base designed for new and existing dwelling unit applications.
OSI-R-SS, OSI-RA-SS Conventional Reflective Imaging Beam Smoke Detector
The SpectrAlert Advance SPSRK-R (replacement model) is a red, outdoor speaker strobe for wall installation with selectable strobe settings of 15, 15/75, 30, 75, 95, 110 and 115 cd. Offers mounting plate only - no back box included.
The SpectrAlert Advance WTP is a red weatherproof mounting plate for flush mounting outdoor K series speakers and speaker strobes. Especially for use with SpectrAlert Advance replacement outdoor models.