The System Sensor 2WTA-B is a 2-wire, photoelectric i3 smoke detector with thermal sensor and built-in sounder.
System Sensor i3 series smoke detectors represent 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.
The i3 series provides wide-angle red and green LED indicators for instant inspection of the detector's condition: normal standby, out-of-sensitivity, alarm, or freeze trouble. When connected to the 2W-MOD2 loop test/maintenance module or a panel with the i3 protocol, the EZ Walk loop test feature is available on 2-wire i3 detectors. This feature verifies the initiating loop wiring by providing LED status indication at each detector.
85 dB sounder
Form C relay
Isolated thermal sensor
Plug-in design (base included)
Flexible mounting options
Stop-Drop ’N Lock™ attachment to the base
Removable cover and chamber
Remote maintenance signaling
Drift compensation and smoothing algorithms
Simplified sensitivity measurement
Name: 2-WIRE P/E SMK W/THERM&SOUND, System Sensor, System Sensor
Category: System Sensor, Fire, Fire Detection Devices, Smoke Detectors
UPC Code: 783863019968
Country of origin: Mexico. Country of origin is subject to change.
ADI Part Number
Manufacturer Part Number
2i3 WTA-B Smoke Detector
24 V DC
Smoke detector with thermal sensor and built-in sounder