Rako WLED150CV1
Rako Lighting Wired Single Channel 150w Constant Voltage LED Dimmer Module

Designed for use with single channel constant voltage LED fittings and single channel LED tape light. Maximum wattage of 150W for 12V d.c. fittings or 300w for 24V d.c. fittings. Requires a suitable external d.c. power supply (normally the power supply that would be supplied with the fitting for a non-dimming application).