Hieroglyphics?
This is a DC to DC relay. Means the control (switch) circuit uses a DC signal and the load side is also direct current. This device DEMANDS the use of a suitable HEAT SINK.
PHOTO
Near side is CONTROL terminals side. + and - may be confusing
Far side is LOAD terminals side. + and - may be confusing
PROS
The control current consumed is tiny.
CONS
The relay + heat sink is very large size. Four packs of cigarettes stacked one atop another
Cheap Chinese relays cannot possibly pass rated current reliably. The relay shown may be reliable at 10 amperes load BUT NOT FOR MOTORS, incandescent light bulbs, or components that have large capacitors.
