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Electro Signal Lab ES-429CST Photoelectric 2-Wire Smoke Detector with Heat Sensor & Sounder


Our Price : $48.36

Product Code: ES-429CST


The ESL 429 Series self-diagnostic, two-wire smoke detectors continually monitor their own sensitivity and operational status, and provide a visual trouble indication if they drift out of sensitivity range or fail internal diagnostics. This meets NFPA 72 field sensitivity testing requirements without the need for external meters.

Additional diagnostic information is activated by applying a magnet near the detector's integral reed switch. This initiates a self-diagnostic routine and provides visual indication of sensitivity level, or if service is required.

The 429 Series is easily cleaned by simply replacing ESL's proprietary field-replaceable optical chamber. All models are designed to reduce false alarms from dust, insects, RFI and external light. An integral combination rate-of-rise and fixed 135 F (57 C), 50-foot rated, heat sensor is available with all "T" model detectors (see selection guide). An integrated silicon heat sensor and a dedicated microprocessor are used to detect heat and perform the rate of rise calculations, for earlier heat detection.


Sensitivity: max: 3.1 - 1.0%/feet, min: 3.1 + 0.50%/feet
Operating temperature range: 32F to 120F, 0C to 50C
Operating humidity range: 0 to 95% RH
Minimum voltage: C, CT, CRT, CST: 8.5V
Maximum voltage: C, CT, CRT, CST: 33V
Maximum ripple (peak to peak): 10%
Typical average standby current: 70A
Field wiring size: 14 - 24 AWG
Alarm current: draws max of 60 mA if not limited by panel
Max. avg. polarity reverse current: CST: 10mA
Sounder specifications: 85dB at 10 feet

Heat detector specifications:

fixed temp.: 135F 5F (57.2C 2.8C)
rate of rise: 15F/min. & > 105F (8.3C/min. & > 40.6C)
Relay specifications: 2A @ 28 V DC or 120 V AC
Packaging: 10 detectors are packed in a carton
Color: white cover/white base with UV inhibitor to prevent yellowing
Listings: UL 268, FM, CSFM and MEA (New York City), for Canadian ULC listed products use 428 series
  • Intelligent, self-diagnostics
  • Field replaceable optical chamber
  • Low-profile design
  • Plug-in terminal block
  • Advanced false alarm immunity

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