Imtra Switchmode Dimmer, 12/24VDC-250/500W - 0 - 0

Soft-start function: Prolongs Bulb Filament Life
Memory function that records last light-level setting so same brightness is resumed when turned on again

Master/slave function that allows either dimmer to act as the master or the remote allowing unlimited power potential.
Multi Voltage Capable (9-33VDC)
Supports unlimited numbers of momentary push-button switches
Diagnostic indicator via color code LED (standby mode, load on, short circuit &amp over temperature warning
Protections: transient voltage, short circuit and over temperature

These dimmers are controlled by any "normally-open" single pole single throw momentary switches (any brand).