Collingwood Salvus Bolt-On Dimmable PIR Sensor

A PIR That Becomes Part of the Fitting

Adding motion control to an existing luminaire usually means taking it down and reworking the wiring. The Collingwood Salvus Bolt-On Dimmable PIR Sensor avoids that. It threads into the standard M20 entry the host fitting already has, so the sensor ends up as part of the luminaire itself rather than a separate box mounted somewhere on the wall. Collingwood quotes a four minute conversion time, which gives you a fair idea of how little work is involved. If you have been looking for a bolt on PIR sensor that dims a light rather than just switching it on and off, this is the one in the Salvus range that does it.

White Polycarbonate With a Faceted Lens

There is one version of this sensor and it comes in plain white polycarbonate. The body is a long, slightly tapered wedge with a smooth satin surface, and the PIR lens sits in a raised collar at the nose, a small faceted dome in a paler off white. At the opposite end is the threaded M20 spigot and its locking nut. It is a deliberately anonymous piece of kit. White polycarbonate is what Collingwood uses on the housings of its own battens and low bays, so the sensor reads as part of the fitting instead of an obvious afterthought bolted to the end of it. At 0.1 kg and 136mm long, 33mm wide and 28mm deep, it stays visually small even on a compact batten.

How It Works

The sensor picks up movement in the space below and dims the connected luminaire in response, so the light drops back when the area is empty and lifts again when someone walks in. The critical point before you order is the driver. Collingwood is clear that this model needs the luminaire to already have a 0-10V driver in it. On a fitting with a mains dimmable driver or a plain non dimming driver it will not do its job, so check the driver type on the existing luminaire first. Collingwood lists the sensor as compatible with its Borealis, Caiman Anti-Corrosive and Lentus ranges, and it is designed to be used at mounting heights of 2.5 to 6.0 metres. Installation is the M20 thread and the wiring connection, nothing more, and the sensor itself draws 0.5W.

Where It Works Best

This is a fit and forget accessory for spaces that are only occupied part of the time. The 2.5 to 6.0 metre mounting range points it squarely at warehouse aisles, workshops, storerooms, plant rooms, loading bays, stairwells and long service corridors, the sort of places where lights are routinely left running over an empty floor. It is equally at home in agricultural buildings and covered car parks. Because it is sealed to IP65 it can also be used in a bathroom, and if you are planning that sort of installation our guide to bathroom lighting zones sets out what each zone allows. Pairing it with the Caiman Anti-Corrosive range extends it to damp, dusty and washdown areas where a standard sensor would struggle.

About Collingwood Lighting

Collingwood designs and manufactures its LED products in Sywell, Northamptonshire, and has worked in LED technology alone since 2002. The brand states it was among the first to put fire rated, fully sealed for life and mains dimmable LED products in front of the UK electrical wholesale trade. It has also been awarded an EcoVadis Gold medal, which places it in the top 5% of all companies assessed worldwide for sustainability. Accessories like this one reflect that trade focus, built to shorten a job on site rather than to look clever in a brochure.

Good to Know

• Covered by a 5 year warranty from Collingwood.
• Rated IP65, meaning it is fully dust tight and protected against low pressure water jets from any direction.
• Rated IK07 for impact resistance, which matters in workshops and loading areas where knocks happen.
• Class II construction, so no earth connection is required at the sensor.
• Only dims luminaires that already have a 0-10V driver fitted. It will not dim a mains dimmable or non dimming fitting.
• Fits a standard M20 entry, with a four minute conversion time quoted by Collingwood.
• Designed for mounting heights of 2.5 to 6.0 metres.
• Product data lists a 120 degree angle for the sensor head.
• Body is moulded polycarbonate in white. Measures 136mm x 33mm x 28mm and weighs 0.1 kg.
• Product code PIRBOLTDIM.
• Care is simply keeping the lens clear. Wipe the dome with a dry cloth so dust and cobwebs do not blunt detection.
• Moonlight Design recommends installation by a registered NICEIC electrician.

Questions People Ask

Will the Collingwood Salvus Bolt-On Dimmable PIR Sensor work with any light fitting?
No. The Collingwood Salvus Bolt-On Dimmable PIR Sensor, product code PIRBOLTDIM, requires the luminaire to already have a 0-10V driver fitted, and it needs a standard M20 entry point to bolt into. Collingwood lists it as compatible with the Borealis, Caiman Anti-Corrosive and Lentus ranges.

What mounting height is the Salvus bolt on PIR sensor designed for?
Collingwood specifies the Salvus Bolt-On Dimmable PIR Sensor for use at heights of 2.5 to 6.0 metres. That range suits most warehouse, workshop and commercial ceiling heights, and it is the figure to check against your own ceiling before ordering.

Can this PIR sensor be used outdoors or in a wet area?
The Collingwood Salvus Bolt-On Dimmable PIR Sensor is rated IP65, which means it is sealed against dust and against low pressure water jets from any direction. That rating covers covered outdoor positions, damp stores and washdown areas, and it is why the sensor is paired with the Caiman Anti-Corrosive range.

What is the difference between the dimmable Salvus bolt on PIR and the standard one?
The dimmable version, PIRBOLTDIM, varies the output of the connected luminaire in response to movement instead of simply switching it on and off, which is why it depends on the fitting having a 0-10V driver. The standard Salvus bolt on PIR switches the luminaire rather than dimming it.

How long does it take to fit a Salvus bolt on PIR sensor?
Collingwood quotes a four minute conversion time for the Salvus bolt on sensors, because the unit threads into the luminaire's existing M20 entry rather than requiring the fitting to be rewired. The sensor itself consumes 0.5W and is Class II, so no earth connection is needed at the sensor.

136mm length x 33mm width x 28mm depth

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