🔐 Choosing the Right Security System Sensors
The success of security systems isn't limited to the quality of the alarm panel or camera. Choosing the right sensors is fundamental to the system's effective operation. Choosing the wrong sensor will either consistently generate false alarms or fail to detect real threats.
So, which sensor should be used in which area? What features should you pay attention to? In this article, you'll find critical tips for choosing the right sensor .
📌 1. What is a Sensor and Why is it Critical?
Sensors are like the security system's "senses." They detect physical events in the environment, such as movement, temperature, vibration, gas leaks, openings, or sounds, and transmit this information to the control panel.
✅ Choosing the right sensor ,
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Increases system reliability
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Reduces false alarm rate
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Speeds up response time
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Prevents unnecessary expenses
🧭 2. How to Choose a Sensor According to Your Needs?
The table below shows which sensors are suitable for each area:
| Area / Need | Recommended Sensor Type | Explanation |
|---|---|---|
| Entrance Gate | Magnetic Contact | Open/close detection |
| Window / Glass | Glass Break + Magnetic Contact | Both impact and opening are detected |
| Interior Protection | PIR (Motion Sensor) | Humans perceive temperature changes |
| Office / Warehouse | Dual Technology (PIR + MW) | Low probability of false alarms |
| Garden / Open Space | Outdoor PIR / Microwave | Must be weather resistant |
| Safe / Valuables Area | Vibration / Shock Sensor | Sensitive to impact and vibration |
| Flood Risk Areas | Water Leak Sensor | Gives alarm when ground water comes into contact |
| Kitchen / Combi Room | Gas / Smoke Detector | Against leakage and fire risk |
| Night Security | Curtain Type Motion Sensor | Narrow angle motion detection across the window |
🎯 3. 7 Criteria to Consider When Choosing
✅ 1. Physical Structure of the Space
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Open space or closed space?
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How high is the ceiling?
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Is there a wall structure or glass surface?
📌 Example: A microwave sensor is more suitable for glass-enclosed areas.
✅ 2. Presence of Pets
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If there are cats/dogs weighing less than 20 kg at home, “pet-immune” (animal-friendly) sensors should be preferred.
📌 To avoid generating false alarms, the PIR sensor must be resistant to pet detection.
✅ 3. Mounting Point and Angle
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The sensor's viewing angle varies between 90°–180°.
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A long-range sensor should be used for corridors and a wide-angle sensor should be used for large areas.
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It is usually installed at a height of 2.2–2.5 m .
✅ 4. Power Supply Type (Wired / Wireless)
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Wired systems: Stable, more resistant to external interference.
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Wireless sensors: Easy to install, suitable for portable structures.
📌 The battery life of wireless sensors should be checked regularly (average 1-2 years).
✅ 5. Outdoor Compatibility
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Outdoor sensors must have a protection class of IP65 or higher .
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Products that are resistant to effects such as sunlight, rain and wind should be preferred.
✅ 6. Alarm Panel Compatibility
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The selected sensor must be compatible with the alarm panel you are using (for example: Ajax, DSC, Paradox, Crow, Telesis etc.)
✅ 7. Analytical and Intelligent Behavior Ability
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Some advanced systems can analyze movement duration, intensity, and light level.
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Such intelligent sensors minimize false alarms.
📊 Sensor Type Comparison Table
| Sensor Type | Application Area | False Alarm Risk | Cost | Installation Difficulty |
|---|---|---|---|---|
| PIR | Interior | Low | Low | Easy |
| Microwave (MW) | Outdoor / large area | Middle | Middle | Middle |
| Dual Technology | Professional environments | Very Low | High | Middle |
| Magnetic Contact | Door/window | Very Low | Low | Easy |
| Glass Breakage | Showcase, glass areas | Low | Middle | Easy |
| Vibration Sensor | Safe, glass | Middle | Middle | Middle |
🔒 Correct Sensor = Effective Security
The secret to setting up a good security system lies not only in choosing a brand but also in placing the right sensor in the right place.
While choosing the wrong sensor will constantly bother you with false alarms, the right sensor will detect every danger in time.
🛠️ Recommendation: Get Expert Support for System Planning
Discovery by a security expert:
✔ Determines the number and placement of sensors required
✔ Reduces unnecessary costs
✔ Reduces false alarm rate
✔ Makes the entire system compatible
✅ Result
🔹 Sensor selection determines the performance of the entire security system
🔹 Area of use, environment structure and system compatibility must be taken into consideration.
🔹 Correct sensor = Fast response + Reliable alarm + Trouble-free use
Remember:
👉 “It is not important to hear the alarm, but to make it ring on time.”
And this is possible with the right sensor .
