Ever had a motion sensor go off because a cat brushed past the living room? Frustrating, right? That’s what happens when a single‑technology detector mistakes harmless movement for a threat. Dual‑technology motion sensors solve this by using two different detection methods together. In plain terms, they pair infrared (PIR) with microwave radar, so both have to agree before the alarm triggers.
The PIR part watches for heat changes – basically, a warm body moving across its field. The microwave side sends out tiny radio waves and detects any disturbance in those waves. If a human walks by, both the heat and the wave pattern shift, and the sensor says, “Yep, that’s a real intrusion.” If it’s just a gust of wind moving a curtain, only one sensor reacts, and the alarm stays quiet. That double‑check dramatically cuts down on false alerts.
Fewer false alarms. The main selling point is the reduced nuisance. Less false alarms mean lower monitoring fees and fewer calls to the local police that could earn you a bad reputation.
Better coverage. Because microwave waves can see through certain obstacles better than infrared, you get a more reliable detection zone, especially in corners or near windows.
Compatibility with modern alarm panels. Most UK‑based systems, including the Birmingham Security Command Center’s monitoring service, accept dual‑technology sensors without extra wiring. They plug into the same zone as a regular sensor, so you don’t need a whole new panel.
Longevity. These sensors are built to handle the British climate – moisture‑resistant housings and sturdy casings keep them working through rain and frost.
First, locate the sensor about 8‑10 feet high, pointing toward the most likely entry points. Make sure there’s no direct sunlight or heat sources that could confuse the PIR side. Keep it at least 12 inches away from walls to allow the microwave field to expand correctly.
Mount it using the supplied screws and a simple drill. Most dual‑technology models come with a quick‑connect wiring harness that snaps onto your alarm panel’s zone terminals. Double‑check the polarity – the red wire is usually +12V, black is ground.
After wiring, power up the panel and run its test mode. Walk through the detection zone; you should see both the PIR and microwave indicators light up before the alarm triggers. If one doesn’t respond, adjust the sensor angle or move it a few inches.
Look for a sensor with a adjustable sensitivity knob – this lets you fine‑tune the detection range for a small flat or a large house. A built‑in self‑test feature is a bonus because it tells you when a component fails, saving you a service call.
Price-wise, dual‑technology sensors sit a bit higher than single‑technology ones, usually between £40‑£70. Think of it as an investment: fewer false alarms mean lower monthly monitoring fees and less hassle.
Finally, read the compliance label. In the UK, you want a sensor that meets BS EN 62676‑2 standards, ensuring it works with professional monitoring services like Birmingham Security Command Center.
Once installed, you only need a quick visual check every six months. Clean the front glass with a soft cloth – no harsh chemicals. Test the system after any power outage to confirm it’s still synced with the panel.
If you notice reduced range or occasional false alerts, adjust the sensitivity or reposition the unit. Most issues resolve without calling a technician.
In short, dual‑technology motion sensors give you smarter, more reliable protection without the headache of constant false alarms. They fit right into existing alarm setups, are easy to install, and keep your home safe – whether you’re at home, at work, or on holiday.
Find the best type of motion sensor for your home. Explore PIR, microwave, dual-tech motion sensors, tips for choosing, and real-life security tips. Make your home safer today.
