1S
IESNA Type I Short (rectangular)
Asymmetric
Clear
Drawn from the beam setting, not measured
Industrial · Linear
Red and white dairy Lights
Dairy shed lighting with a daylight-spectrum white mode and a red night mode in one fitting.
- 80W or 120W white, plus 10W or 40W red
- 11,760 and 17,250 lm
- 147 lm/W (80W), 150 lm/W (115W)
- IP66
- 10 Years, T&Cs apply warranty
Order code DRU5-AG1-80-857-120-D1-TM-GR
11,760 lm
CRI>80, 5700K. 120° circular optic. GR grey, C3 rated.
No lumen is published for that combination.
Measured file DRU5-AG1-80-857-120: 10,183 lm at 78.25 W (130.1 lm/W).
80W white + 10W (AG1) or 40W (AG2) red nominal. 834 × 82 × 71 mm, 3 modules, 3.6 kg. Driver Inventronics EUM075 (white). CE, RoHS.
- 10 years
- C5 marine
The Drummond Series Dairy Light is purpose-built to help dairy farmers enhance herd welfare, increase milk yields, reduce energy costs, and ultimately drive farm profitability.
Each fitting features two distinct output modes: white and red. The white light uses specialist LED chips designed to closely replicate the natural daylight spectrum, supporting cow productivity and well-being during daylight hours. The red light enables effective night-time monitoring, mitigating disruption to the animals' circadian rhythm, maintaining a calm and stress-free environment.
The combination of both light modes within a single unit, along with dual individually controllable circuits, allows for straightforward installation and flexible operation via time-clock, photocell, or a combination of the two.
A rugged, shock-resistant aluminium housing with a marine-grade powder-coated finish ensures durability in demanding agricultural environments. With a 10-year warranty, the Drummond Series delivers long-lasting performance, reliability, and energy efficiency for the modern dairy operation.
| Series code | DRU5-AG1 (10W red), DRU5-AG2 (40W red) |
|---|---|
| Nominal power | 80W or 120W white, plus 10W or 40W red |
| Efficacy (white) | 147 lm/W (80W), 150 lm/W (115W) |
| Lumen output (white) | 11,760 and 17,250 lm |
| Red output (measured) | 1,290 lm (AG1), 5,160 lm (AG2), from the photometric files |
| Lumen maintenance | L70B10 ≥100,000 hours (TM21 calculated) |
| Certification | CE, RoHS |
| Warranty | 10 Years, T&Cs apply |
Sheet lumen at CRI>80, 5700K, with no modification: 80 11,760 lm, 115 17,250 lm. Another CRI, or a modification, still prints the order code and leaves the lumen blank. 4 measured files give 127.4 to 130.1 lm/W; the measured figure for the chosen optic shows under the code.
DOWNLOADS
Questions for Adam list what the sheet and the measured files do not settle yet.
LIGHT DISTRIBUTION OPTIONS
90
90° circular
Symmetric
Clear
Drawn from the beam setting, not measured
120
120° circular
Symmetric
Clear
Measured, DRU5-AG1-115-857-120
150
150° circular
Symmetric
Clear
Drawn from the beam setting, not measured
Polar: solid green C0–C180, dashed blue C90–C270, dotted amber the plane through the brightest direction when it lies between them; rings at 25% steps of the peak. Isolux: the footprint on the floor with the fitting aimed straight down, contours at 50%, 25% and 10% of the brightest point, grid in mounting heights (H). Both are drawn from the first measured file for that optic.
DESIGN FEATURES
Dairy lights designed for Purpose
The Drummond Series Dairy Light has several features uniquely tailored to dairy environments, including: Integrated Red + White LED Output: Combines high-efficacy white lighting (cost-effectively delivering desired light levels, e.g. 200 lux) with low light red night-mode LEDs - supporting cow circadian rhythms. Red lighting allows night-time checks without disrupting melatonin cycles, aiding fertility and milk yield. Precision Photobiological Light Control: By combining the light's independently switchable white-light and red-light circuits with time clocks, the lighting system can provide consistent photoperiod lighting, supporting long-day photoperiod management during winter hours (e.g. 16 hours light / 8 hours dark) to boost milk production. It is then also easy to implement lighting regimes specific to different herd stages (e.g. lactation vs dry cows). Uniform, Glare-Free Illumination: Special optics support uniform distribution across stalls and feed alleys with reduced glare, improving cow comfort and visibility for farm staff. Rugged and Waterproof for Wash-downs: Dairy sheds often require regular pressure washing. The Drummond Series Dairy light is fully sealed to IP66 with corrosion-resistant construction, tolerating wet, ammonia-rich environments. Smooth, Hygienic Design: Designed with a cleanable, smooth housing - no fins or upward-facing crevices - minimising dust, insect, and bacterial build-up. This makes it ideal for hygiene-sensitive areas like milking parlours and calf housing.
TYPICAL APPLICATIONS
GALLERY
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SPECIFICATIONS
| Chip | Nichia 3535 NVSW219FT (white), Cree XP-E2 (red) |
|---|---|
| Distribution | Direct |
| CCT | 5700K |
| CRI | ≥80Ra |
| Diffusers | Clear |
| Symmetric | 90°, 120°, 150° |
| Asymmetric | IESNA Type 1 Short |
| Optical accessories | Backspill guard |
| Driver | Inventronics EUM075 (80W), EUM150 (115W), white modules |
|---|---|
| Circuits | Two, individually controllable (white and red) |
| Supply | 100-277VAC |
| Frequency | 50-60Hz |
| Power factor | >0.9 |
| THD | <20% |
| Insulation | Class I |
| Surge | 10kA |
| IP | IP66 |
|---|---|
| IK | IK10 |
| Marine resistance | C3 (C5 optional) |
| Ambient | −40 to 50°C |
| Storage | −40 to 50°C |
| Connection | 800mm cable |
|---|---|
| Body | Aluminium alloy |
| Finish | AkzoNobel powder coated (marine grade available) |
| Lens | UV stabilised polycarbonate |
| 80 | 80W white + 10W (AG1) or 40W (AG2) red nominal. 834 × 82 × 71 mm, 3 modules, 3.6 kg. Driver Inventronics EUM075 (white). CE, RoHS. |
|---|---|
| 115 | 120W white + 10W (AG1) or 40W (AG2) red nominal. 1107 × 82 × 71 mm, 4 modules, 4.6 kg. Driver Inventronics EUM150 (white). CE, RoHS. |
Footnote 1: GR2 and BL2 have an upgraded AkzoNobel polyester powder coat for increased salt corrosion resistance.
