The CP Electronics GEFL is a low-profile, IP40 flush-mounted ceiling PIR occupancy sensor with lux level sensing and adjustable time delay from 10 seconds to 30 minutes. Ideal for lighting, heating, or ventilation control, it works with any lamp type, including LEDs, making it a simple, cost-effective solution for small-scale energy-saving projects.
The GEFL ceiling PIR sensor from CP Electronics provides a compact and efficient occupancy detection solution for small installations. Its low-profile, flush-mounted design ensures it blends seamlessly into ceilings while delivering reliable presence detection. Perfect for offices, small commercial spaces, and domestic applications, this sensor helps reduce energy consumption by automatically controlling lighting, heating, or ventilation.
Equipped with lux level sensing, the sensor only activates connected loads when the ambient light is below a set threshold, ensuring energy is not wasted during daylight hours. The time delay and lux settings are adjustable via pots, giving flexibility to meet specific installation requirements.
The sensor is compatible with a wide range of loads, from resistive heaters and incandescent lamps to fluorescent, LED, and low-energy lighting, as well as fans and ventilation systems. Its integral power supply and simple wiring make it a convenient choice for installers seeking a budget-friendly yet reliable solution.
Part of the CP Electronics Green-I range, the GEFL sensor combines energy-saving efficiency with robust IP40 protection, a class 2 electrical rating, and a 5-year manufacturer's warranty, offering peace of mind and long-term durability.
Features & Benefits
Low-profile flush-mounted ceiling sensor – blends seamlessly into ceilings.
Conformity: EMC-89/336/EEC, LVD-73/23/EEC, CE Mark
Warranty: 5-year manufacturer warranty
Note: Some images and pictures are for reference only. The item may differ from the image/picture due to manufacturer's change. Should you require the exact item in the picture, please call or email us to enquire.
We talked about motion sensors on the blog recently, but most of the items in our store are Passive Infra-Red (PIR) devices, which are great - but they're not all we have.
In the Sparks Direct store, you'll also find a couple of microwave motion detectors: a completely different technology.
How do They Work?
A microwave motion detector emits pulses of specific microwave frequencies and then measures reflection off objects (like walls) when those waves return to the sensor. In this manner, the whole area of detection is filled, and the reflections change when there is a moving object (like a person) in the area.
It works very much like the radar guns used by police to catch speeding drivers in the act - these detectors 'sense' motion in terms of speed and size, as opposed to a PIR sensor which senses in terms of heat and light.Benefits
The reflection mechanism means that the line-of-sight problems of PIR sensors - the effect that means a sensor can't detect movement if it occurs around the corner - is reduced, and the microwaves emitted can penetrate most building materials. This means that sensors integrated into light fittings can be protected against dust and moisture intake by design.
They are also affected by background temperature, in contrast with PIR sensors which often don't operate well above 35° Celsius.
Microwave occupancy detectors have a considerable lifespan of around 100,000 hours. Any worries about microwave radiation should be curbed; the devices in our store are very low-power and pose no threat.
Drawbacks
However, although these sensors detect motion through wood and most building materials, microwaves do not penetrate metals. Metal objects act as a shield, which creates shadows or "dead zones" behind them.
Also, everyday movements such as objects blowing in the wind can trigger a false alarm - even fluorescent lights, which emit detectable light particles, can activate the sensor erroneously.
For these reasons, we would recommend that a microwave sensor be paired with a PIR motion detector. The strengths of one device can account for the weaknesses of the other.
If you're interested in purchasing an advanced microwave detector, we stock the low-profile MWS6-PRM and the adjustable MW3SA-PRM, both from industry leader CP Electronics.Microwave Sensor Lights
Shipping
Sparks Direct delivers via courier to the UK only; the standard delivery charge is £6 + VAT for all orders under £100 + VAT. If your order is over £120, you get free delivery (unless there's a special delivery charge for the items you wish to order or you're in shipping zone C or D). Full details for shipping charges can be found via Terms and Conditions.
If the items you order are in stock and the order is placed before 1.00pm, delivery can be made within 1-2 working days. If the items are not in stock, we will inform you via email how long it will take or ask for your confirmation if there's a long lead time.
Returns
We offer 30-day returns for unwanted items - please email us to request a returns number which will need to be quoted when the items are returned. For faulty items or items damaged in transit, please advise via email, and an appropriate returns number will be provided. Full details concerning returns and refunds can be found via our Terms and Conditions.
Please fill in this form to enquire about this product, telling us the quantity you require and your contact details. We will advise via email within 1-2 working days. Thank you.
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