Low pressure sodium vapor lamp BY22d | 37W | 70V | 1800K | 4550lm | Philips
Code: 79739High-efficiency low-pressure sodium vapor lamp, designed for use in areas where economical, reliable, and long-lasting lighting is required. The lamp stands out for its durability, exceptionally high luminous efficacy, and very low energy consumption. Suitable for both domestic and professional use – from street lighting to industrial facilities and special lighting solutions.
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Technical Specifications
Model: SOX 35W BY22d 1SL/12
Power: 37 W
Base: BY22d
Operating voltage: 70 V
Color temperature: 1800 K
Luminous efficacy: 129 lm/W
Energy consumption: 43 kWh/1000 h
Lifetime: up to 18,000 h (50% failures)
Mercury content: 0 mg (environmentally friendly)
Dimmable: No
Operating position: H110Features
Very high luminous efficacy – economical lighting for long-term use.
Special color (1800 K) – emits amber-colored light suitable for outdoor visibility.
Reliable operation with electronic or electromagnetic control gear.
Eco-friendly solution – mercury-free.
Durability – up to 18,000 operating hours, reduced maintenance costs.
Application
For home users: suitable for lighting yards, gardens, garages with compatible equipment.
For engineers: applicable in industrial facilities, tunnels, warehouses where economical, long-lasting lighting is crucial.
For electricians: easy installation with BY22d base, usable with electronic and electromagnetic control gear.
For municipalities and infrastructure managers: suitable for street, road, and bridge lighting.
Pros
High luminous efficacy
Long lifetime – up to 18,000 hours
Eco-friendly – mercury-free
Reliable and stable performance in various conditions
Cons
Not dimmable
Requires special control gear (electronic or electromagnetic)
Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.ManufacturerThis product is marked with the CE label, which confirms that it complies with all applicable European Union directives and regulations. CE marking is not just a formality – it is an important indicator of quality and safety, ensuring that the product has been properly assessed, tested, and can be safely used throughout the EU market.
CE certification means that the product has been evaluated according to the main criteria:
Safety requirements – ensures that the product does not pose a risk to the user or the environment
Electromagnetic compatibility (EMC) – the device does not interfere with other equipment and is resistant to external disturbances
Environmental standards – complies with current ecological and material usage requirements
Operational reliability – the product is suitable for long-term use according to its intended purposeCE marking allows this product to:
be legally supplied and used in all European Union countries
ensure a high level of quality and safety
be used in residential, commercial, and industrial environmentsThe CE mark is a declaration of the manufacturer’s responsibility, confirming that the product complies with all applicable standards and has been assessed according to EU legislation.
What does this mean for you as a buyer?
Safe use in everyday activities
Reliable performance and reduced risk of failure
Compliance with EU standards and requirements
Suitability for professional solutions
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