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System Sensor 2WTA-B P/E Smoke w/Heat and Sounder
System Sensor 2WTA-B P/E Smoke w/Heat and Sounder

System Sensor 2WTA-B P/E Smoke w/Heat and Sounder

Manufacturer:System Sensor
Manufacturer Part#:2WTA-B
Our Part#:2WTA-B
Stock Status: Call for Availability
Retail Price:$132.52
Your Savings:$46.38(35%)
Your Price:$86.14


System Sensor







Feature 5


Feature 7

Product Type:Combination Detector|Input Voltage:24VDC|Detection Type:Photoelectric + Heat|Connection Type:System|Intended Use:Commercial/Industrial|Battery Backup:No|Interconnect:No|System Type:Conventional


  • Full line of options including:
    – 85 dB sounder
    – Form C relay
    – Isolated thermal sensor
  • Maintains the i3 feature set including:
    – Plug-in design – base included
    – In-line terminals
    – Flexible mounting options
    – Stop-Drop ’N Lock™ attachmentto the base
    – Removable cover and chamber
    – Remote maintenance signaling
    – Drift compensation and smoothing algorithms
    – Simplified sensitivity measurement
    – Dual color LEDs

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.


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.

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