Basically the same as REL-240 but now equipped with an additional Casambi input to which you can connect a push button. This push-button switches the relay at the factory. This small IP65 waterproof molded block therefore houses a relay. Beware of switching inductive loads, see the manual in the PDF, which also warns you about switch-on currents for drivers, etc; 10 Amp is a bit on the big side for us.
Supply voltage; 230V
Push button; potential free.