Dedicated 24 volt DC bulb – this isn’t a 12vDC bulb being overdriven.
Not a variable voltage globe – no radio noise.
12v version here

Caravans and Motorhomes 24v:
Standard replacement for 1142 type lamp.
Marine 24v – Can be used as a masthead or cabin bulb.
Steel BA15D sockets here.

Specifications:

Overall length: 48mm
Diameter on top: 20.0 mm
Rated voltage – 24vDC systems
Consumption – 5.5w (250 mA)
LED Type – Samsung 5730
Quantity – 27
Colour – Cool White 6000k
Luminous flux – 500lm
Warranty – 12 months

Queries/Phone Orders – (07) 40962152