Control Inputs:SLAVE terminal used as an input from remote push-button or switch turns on relay when that switch is on. Activation is by connecting this input to Ground. Input from other equipment???s open-collector output turns relay on when open-collector is on. Note: RDL switching STICK-ONs have open-collector outputs suitable for driving an ST-LCR1. 5V+ accepts 3.5 to 12 Vdc to turn on relay. Relay is on only when this control signal is applied. 24V+ accepts 12 to 35 Vdc to turn on relay. Relay is on only when this control signal is applied.Control Output:SLAVE terminal open-collector @ 25 mA suitable to drive indicators or slave LCRsSwitching 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 * * Assumes 20 mA max load at SLAVE outputAmbient Operating Environment:-10C to 55C