Control Inputs:SLAVE terminal used as an input from remote push-button or switch turns onput from remote push-button or switch turns on relay when that switch is on. Activation is by connecting slave input to ground. Input from other equipment???s open-collector output turns relay on when open-collector is on. Note: RDLswitching STICK-ONs have available open-collector outputs suitable for driving ST-LCR2. 5V+ accepts 3.5 to 12 Vdc to activate control circuit. Relay turns on when this input is pulsed high then low, then turns off again the next time it is pulsed high then low. 24V+ accepts 12 to 35 Vdc to activate control circuit. Relay turns on when this input is pulsed high then low, then turns off again the next time it is pulsed high then low.Output Slave:Open-collector @ 25 mA suitable to drive indicators or slave LCRs.Switching Contacts:Double-pole, double-throwMaximum Switching Power:60 W (220 Vdc, 125 Vac, 2 A)Power Requirement:GROUND-REFERENCED, 24 to 33 Vdc @ 50 mA (assuming 20 mA max load at SLAVE output)Ambient Operating Environment:-10 C to 55 C