Open-collector output allows connection of remote on indicator. The Slave Input from a remote push-button or switch turns on the relay when that switch is closed.
Activation is by connecting the slave input to ground.
The 5 volt input accepts 3.5 to 12 Vdc to activate the control circuit. The relay turns on when this input is pulsed high, then turns off again the next time it is pulsed high. The 24 volt input accepts 12 to 35 Vdc to activate the control circuit. The relay turns on when this input is pulsed high, then turns off again the next time it is pulsed high. 2 A Max.