Ansell Astro LED Bulkhead

CRI stands for Colour Rendering Index. It is a measurement of how well a light source can render the true colour of an object compared to natural light.

Rated out of 100, with an open flame or sunlight being a perfect 100. A light with 90 CRI and above would be classed as having high CRI, while 80 CRI is the standard for LEDs.

Read more about high CRI.

Colour temperature is a measurement of appearance. Measured in Kelvins, the lower the rating, the warmer the light appears. Choosing the right temperature can have a dramatic effect on a room.

2700K - Extra Warm White

Similar to a traditional incandescent light bulb or halogen. It has a more orange and warmer tone, with a ‘soft white’ appearance. Ideal for living rooms.

3000K - Warm White

Clearer, but still quite warm. This is the ‘new norm’ for general lighting and is the most popular option. If you’re unsure I’d recommend trying this one.

4000K - Cool White

Clearer, whiter and crisp; used in commercial locations including supermarkets. Cool white appears brighter than warm white as the LED is covered in less phosphor. It can make a room appear cold and clinical but used correctly (white walls etc) it can make a room appear cleaner and modern.

More information about colour temperatures.

Selecting the appropriate color or finish for your lights and switches is key to creating a unified and attractive interior. Aim to match the finish of your downlights with other elements like switches and sockets. The matt white finish is especially popular for downlights as it seamlessly merges with white ceilings. More info here.

IP (International or Ingress Protection) defines a products level of resistance to dust and moisture. The first digit is for dust and the second digit is for moisture.

Anything higher than IP44 can be used in bathroom zones 1 and 2. IP44 is splash proof and resistance to particles larger than 1mm.

An IP65 rating offers a higher resistance to moisture and is generally used outdoors. IP65 is usually specified for bathroom downlights but according to the Building Regulations, IP44 provides adequate protection.

An IP68 rating is fully water resistant and can be submersed in water, up to 1M in depth.

Warm white, cool white, what ever you prefer. More info about colour temperatures here.

A standard light fitting has no emergency or sensing options.

AC standards for alternating current and DC standards for direct current.

Mains voltage is 230V AC and has a tolerance of 10%, some products are 220V or 240V AC which means they can be classed as mains voltage.

DC voltages usually require an LED driver to convert the mains voltage AC into low voltage DC. Popular DC voltages are 12V or 24V DC.

The minimum guarantee period of this product.

Wattage is the unit used to measure the rate of energy transfer or power consumption in an electrical circuit or device.