2W-TAB SYSTEM SENSOR 2-wire photoelectric i3 series smoke detector with thermal sensor and built-in sounder
Model 2WTA-B is a 2-wire photoelectric smoke detector. This model incorporates a state-of-the-art optical sensing chamber and an advanced microprocessor. The microprocessor allows the detector to automatically adjust its sensitivity back to the factory setting when it becomes more sensitive due to contaminants settling in its chamber. In order for this feature to work properly the chamber must never be opened while power is applied to the smoke detector. This includes cleaning maintenance or screen replacement. All models also feature a restorable built-in fixed temperature (135°F) thermal detector and it is also capable of sensing a freeze condition if the temperature is below 41°F.
Contain a piezoelectric horn which generates the ANSI S3.41 temporal pattern in an alarm condition. Also enables all the detectors’ sounders on a zone to be synchronized and allows the zone to be silenced from the panel by entering the alarm silence key at the keypad. - The detector that initiated the alarm condition will have its red LED and Form C relays (if applicable) latched until reset by the panel.
• Photoelectric sensor
• Voltage: 12/24 Vdc
• Local audible alarm of 85 dB
• Fixed temperature sensor to 57.2 °C
• Current in passive state: 50 μA
• Current in Alarm: 130 mA
• Sensibility: 2.5%pie
• Service temperature: 0º to 37.8 ºC
• Humidity: 0 to 95% without condensation
• Dimensions: 134 x 51 mm