Resideo/Honeywell CO Sensor

Application:
GD250W4NB is IAQ(Indoor Air Quality) sensor, which is designed to detect carbon monoxide gas in the air. This model has high accuracy at low concentration, so it is optimum for parking lot, tunnel and under ground places. Also, the advantage of this model is compact size and easy installation.

Caution:
· The standard test condition is 25???, 50%RH. Sensitivity will be decreased when the sensor is located in extreme dry condition or places.
· Avoid exposure where silicone adhesives, hair grooming materials or silicone rubber/putty may be present.
· Avoid exposure to alkaline metals, especially salt-water spray.
· Avoid exposure to highly corrosive materials such as H2S, SOX, Cl2, HCl, etc. · Sensor drift may occur due to soaking or splashing the sensor with water.
· If water freezes on the sensing surface, the sensing material would crack, altering characteristics.
· If water condenses on the sensor's surface and remains for an extended period, sensor characteristics may drift.
· Sensor performance may be affected if exposed to high density of gas for a long period of time, regardless of the powering condition.
· When stored without powering for a long period, the sensor should be stored in a sealed bag containing clean air, do not use silica gel.
· Regardless of powering condition, if the sensor is exposed in extreme conditions such as very high humidity, extreme temperatures, or high contamination levels for a long period of time, sensor performance will be adversely affected.
· Avoid excessive vibration or strong shock that may cause the sensor or lead wires to break.