This highly sensitive detector is suitable for most applications – even very large ducts.

The flush surface inside the duct promotes self cleaning and the small weather proof enclosure makes service a breeze.

The 120-1 features a comprehensive through-the-lens sensitivity test, and the highest sensitivity available.

For high temperature applications, the detector must be kept remote from the surface of the duct to protect the electronics. This is accomplished by stainless steel clad fiber optic probes to “look” into the duct.

The 121-2S detectors feature a very tough and very smooth sapphire lens which promotes self cleaning and resists abrasion and corrosion.

The small size of the fiber optic probes also makes them ideal for mounting to small ducts.

The 121-2S features a comprehensive through-the-lens sensitivity test, and the highest sensitivity available.

The 122-2X and 122-3X detectors are designed to meet the requirements of Class II environments. Since cable entry must be via rigid conduit, flexible fiber optic probes are used to facilitate cleaning of the lens.

The 122-2X has two fiber optic probes and the 122-3X has three.

The detector is contained in an outdoor NEMA 4 rated aluminum enclosure. It is equipped with a quick-release mounting bracket for mounting onto the surface of a duct. The quick-release mounting bracket allows for easy periodic cleaning of the lens surface.

Each detector is equipped with an infrared LED located behind the protective lens. This LED is used to test the opposing detector when more than one detector is used in a duct. In this way each detector can test the sensitivity of the opposing detector in actual operating conditions.

The 220-1 is similar to the 120-1 but is designed to interface with fire alarm control panels, PLC’s, etc.

The 220-1 requires 24 VDC and provides an open collector control or a standard 4 wire interface with normally open, dry contacts.

Through the lens sensitivity is provided for pairs of detectors giving a pass / fail response.

The 221-2S is similar to the 121-2S but is designed to interface with fire alarm control panels, PLC’s, etc.

The 221-2S requires 24 VDC and provides an open collector control or a standard 4 wire interface with normally open, dry contacts.

Through the lens sensitivity is provided for pairs of detectors giving a pass / fail response.

The 222-2X and 222-3X are similar to the 122-2X and 122-3X but are designed to interface with fire alarm control panels, PLC’s, etc.

The 222 requires 24 VDC and provides an open collector control or a standard 4 wire interface with normally open, dry contacts.

The 222-2X has two fiber optic probes and the 222-3X has three.

The ODTI 4600 Infra Red Ember Detector is an ultra sensitive optical sensor designed to detect the radiant energy emitted by burning or glowing embers being transmitted on conveyer belts. The detector is designed to detect a 1 sq. inch ember at a distance of 3 feet traveling at up to 20 fps.

The 4600 is sensitive only to the radiation emitted by the formation of CO₂ produced by a smoldering ember and is insensitive to ambient light - even solar.

SharpEye 20/20SI

The patented triple IR circuit design scans for oscillating IR radiation (1 to 10 Hz) in the spectral bands ranging from 4.0 to 5.0 microns. This highly advanced detector uses programmed algorithms which check the ratio and correlation of data received by the three sensors. Only detection of radiation emissions matching the spectral fingerprint of fire will produce an alarm, making the 20/20SI highly immune to false alarms.