Color: As shown in the First image. Quantity and size : As shown in the title or description. Dc Solid State Relay Ssr-40dd Features: Optical Isolation Between the Control Loop and the Load Loop Thyristor Output, Zero Current Shutdown, Voltage Zero Crossing Use a Suitable Radiator when Using, and Add For ced Air Cooling if Necessary Control Signals Are Compatible with TTL Logic Flame Retardant Engineering Plastic Shell, Metal Bottom Pla Features: Place of Origin: Mainland DC Solid State Relay Contact For m: Normally Open Power Mode: Direct Current Input Parameters: Control Mode: 3-32VDC (DC) Input Current: 10mA Work Instructions: LED N-off Time: 10mS (milliseconds) Reliable Shutdown Voltage: Less Than 0.8VDC Output Parameters: Output Withstand Voltage: DC 12-480VDC Has a Higher 1200VDC 1700VDC Rated Operating Current: 10A.15A.25A.40A.60A.80A.100A On-state Voltage Drop: 0.70V Minimum on Current: 50mA Off-state Leakage Current: 10mA Maximum Inrush Current (10ms): 10 Times Rated Operating Current Per For mance Parameters: Medium Withstand Voltage: 2500VAC (1 Minute) Insulation Voltage: 2500V Insulation Resistance: 100M Working Temperature: -35 ~ 75 C Power Frequency: 50/60HZ Heat Dissipation Conditions: 25A with Radiator, 40A Plus Fan Strong Cooling Load Current Safety Factor: Resistive Load