System Sensor 2WTA-B i3 Series Plug-in Smoke Detector with Built-In Thermal & Audible Sounder
The 2WTA-B is a 2-wire, photoelectric i3 smoke detector with thermal sensor and built-in sounder.
System Sensor’s i3™ sounder and relay smoke detectors apply the guiding principles of installation ease, intelligence, and instant inspection in a series of specialty conventional devices.
Installation ease - Throughout the i3 series, installation is simple with its installer-friendly base and plug-in design. The base accommodates a broad range of back box and direct mounting options, and provides ample space for pre-wiring the installation. To complete the installation, the i3 detector plugs into its base with a simple Stop Drop ’N Lock action.Intelligence.
Intelligence - To reduce the likelihood of nuisance alarms, all i3 detectors are equipped with both drift compensation and smoothing algorithms. These capabilities minimize both short- and long-term causes of nuisance alarms such as RF interference and dust accumulation. When connected to the 2W-MOD2 loop test /maintenance module or an i3 Ready™ panel, 2-wire i3 detectors can generate a remote maintenance signal when they are in a maintenance or freeze trouble condition. To measure the sensitivity of any i3 detector, the SENS-RDR displays the reading, in terms of percent per foot obscuration, within seconds.
Instant inspection - The i3 line’s red and green LEDs simplify local status indication during power-up, standby, alarm, maintenance and freeze trouble conditions. When in alarm, i3 sounder models generate an 85dB temporal tone. If connected to the RRS-MOD reversing relay/synchronization module, all i3 sounders on the loop will activate when one detector is in alarm. Additionally, the RRS-MOD synchronizes the output of all i3 sounders, to ensure a clear audible signal.
Should the application call for differentiating between a local and a general alarm, the i3 line offers an isolated thermal model, which initiates a local alarm when smoke is detected,
and a general alarm when the thermal sensor is activated.
Specifications: 2WTA-B
- Detection: Photoelectric
- Wiring: 2-wire
- Heat Sensor: 135°F (57.2°C) fixed
- Sounder: 85 dBA
- Operating Voltage: 12/24 V non-polarized nominal, 8.5 min. to 35 max.
- Maximum Ripple Voltage: 30% of applied voltage (peak to peak)
- Alarm Current: 130mA max., limited by panel
- Standby Current: 50 µA max. avg., 100 µA peak
- Temperature Range: 32° to 100°F (0° to 37.8°C)
- Humidity Range: 0% to 95% RH, noncondensing
- Freeze Trouble: 41°F (5°C)
- Sensitivity: 2.5%/ft. nominal
- Wiring Gauge: 14-22 AWG
- Dimensions: 2.0" (51mm) H x 5.3" (127mm) Dia.
- Weight: 7.1 oz. (200 g)
Additional Information
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