Get your security system ready for winter

Security and surveillance need to be effective any time of the year, even when it is very cold, dark and humid. Optex detectors are designed to work reliably in both summer and cold winter conditions thanks to a range of built-in capabilities such as intelligent detection systems and quality components.

For example, our REDWALL SIP outdoor series features an intelligent PIR detection system that can detect ambient temperature and illumination and automatically adjust the sensitivity for optimal performance. In addition, all our dual-tech sensors are designed with a Ceramic PCB material and gold-plated antenna, which ensures longevity if they are exposed to condensation during winter in non-air-conditioned facilities.

However, for some sensors, our tech team also recommends the use of accessories and adjusting settings to ensure the best performance.

Automatic Gain Control Circuit and Automatic Transmit Power Control for IR beams

The SL Series and AX Series beam detectors monitor gradual changes in signal strength due to the weather and can adjust the sensitivity to maintain stable signal strength. In extreme weather, the beam detectors will generate D.Q output (environmental disqualification) to alert if the weather is affecting the lower performance of the sensors. To check the D.Q environmental trouble is working, the best way is to cover the beam with a plastic bag and see if the ‘trouble’ output has been triggered.

If the intrusion system is using an alarm panel, ensure the sensor’s D.Q circuit is physically or wirelessly connected to the panel so it can generate an alert.

Environmental resistance setting in REDSCAN LiDAR Security Systems

The REDSCAN Pro and REDSCAN Mini-series have an environmental resistance setting which should be enabled to improve performance in extreme weather conditions e.g. snow, fog and heavy rain.

Environmental resistance has three options available:

• [Disable] Response time, if alarms are minimum but false alarms, can increase in harsh environments such as fog and snow.
• [ Enable ] (Default) False alarm due to fog or snow can be reduced with a balanced high detection ability.
• [ Enhanced ] Reduction of erroneous reports due to fog or snow can be maximized. It may result in a longer response time

Extreme Weather accessories

Heaters

Most OPTEX detectors will function normally up to -20 and -25 degree Celsius. If the temperatures drop lower than that and in areas prone to frost, there are a number of sensors which can be fitted with heaters, enabling them to operate in extremely cold weather.

Preparing for winter checklist:

Getting ready in advance: important considerations when installing sensors

1. During installation, the detectors’ mount screws, gland plugs and rubber seals must be used to stop water ingress.
2. Where the gland is used for wire and cable connection to the device and cabinet, aim to have the gland facing down. (See image below of SIP3020 and RLS2020I as as an example)

During winter weather conditions

1. Following heavy snow: inspect and remove snow collected on the detector, especially the lens.
2. Inspecting the sensor: open the detector cover when it is dry, do not open the cover in rain. Use an umbrella if it is absolutely necessary to open the cover in the rain to avoid moisture inside the detector.
3. Cleaning the detector lens: If the lenses of any of our sensors are soiled or dirty, it may affect their performance. The cleaner the lens, the better the performance. If there is mud or dirt on your OPTEX sensor’s lens, it should be cleaned. The best way to clean it is with a soft cloth and water, or with antistatic foam cleaner. Detergents shouldn’t be used as they can deteriorate the quality of the lens.
4. Cleaning the IR beam cover: Salt, mud and grit can sit on the beam cover and affect the detection performance, it is recommended to clean the cover with a damp cloth.