Paul Russells - LED filament bulb


4W-330Lm-2200 +/- 200K-360 Deg

Main Image

Test Date: 21/01/2020

Dimming Performance

RMT-500: Minimum brightness from off: 1% Minimum brightness from max: >1% RAK4-T: Minimum brightness from off: 8% Minimum brightness from max: 2% WMT-400: Minimum brightness from off: 5% Minimum brightness from max: >1%

Smoothness of Dimming

There were a few areas of criticism for this fitting with trailing edge dimmers. There was a static flicker observed on the RMT-500 when at a low level. There was also a shimmer while fading observed when tested with the RMT-500 and RAK4-T. When tested with the RAK4-T there was a step up in the profile whereas with the WMT-400 it was grouped towards the top end.

Audible Noise

No audible noise when tested with any of the dimmers.


Picture of fitting tested -

Rating for module compatibility

Dimmer Ratings
Dimmer Rating Tested Units Probable Max Units
RMT-500 Neutral 1 7
RML-500 Not Recommended
RAK4-T Good 1 10
WMT-400 Very Good 1 6


Scope #1


Scope #2


Scope #3