System Sensor 2WTA-B


Photoelectric Smoke Detector with Thermal

Availability: In Stock

  • Factory New
Brand: System Sensor Part #: 32196 Categories: , Manufacturer Part #: 2WTA-BSecondary Part #: 63-1033 Tag:


The System Sensor 2WTA-B is a 2-wire, photoelectric i3 smoke detector with a thermal sensor and a built-in sounder.

System Sensor i3 series smoke detectors represent a significant advancement in conventional detection. The i3 family is founded on three principles: installation ease, intelligence, and instant inspection. The i3 line redefines installation ease with its plug-in design. This allows an installer to pre-wire bases (included with heads). The large wire entry port and in-line terminals provide ample room for neatly routing the wiring inside the base. The base accommodates a variety of back box mounting methods as well as direct mounting with drywall anchors. To complete the installation, i3 heads plug into the base with a simple Stop-Drop ‘N Lock action.

i3 detectors offer a number of intelligent features to simplify testing and maintenance. Drift compensation and smoothing algorithms are standard with the i3 line to minimize nuisance alarms. 2-wire i3 detectors can generate a remote LED indicated maintenance signal when connected to the 2W-MOD2 loop test/maintenance module or a panel equipped with the i3 protocol. The SENS-RDR, a wireless device, displays the sensitivity of i3 detectors in terms of percent-per-foot obscuration.


Weight 0.50 lbs
Dimensions 5.30 × 5.30 × 2.00 in


Detectable Medium

Heat, Smoke

Detection Method

Fixed Temperature, Photoelectric

Thermal Rating



System Sensor

Production Status


Smoke Detectors with Sounder and Relay Option


System Sensor - Data Sheet

Photoelectric Smoke Detector


System Sensor - Installation and Maintenance Instructions