ITEM NAME:DIY 2-CH High/Low Level Relay Expansion Circuit Board Module DC 24V R2O7 DIY 2-CH High/Low Level Relay Expansion Circuit Board Module DC 24V R2O7 Product Name : High/Low Level Trigger Relay Module Model : SRD-24VDC-SL-C Coil Voltage : DC 24V Channel : 2 Channel Contact Voltage : AC 250V 10A, DC 30V 10A 125V 10A, DC 28V 10A Fixing Hole Dia : 3mm/0.12 inch Fixing Hole Center Distance : 44.5 x 35mm/1.7 x 1.4 inch(L*W) Size : 50 x 41.5 x 17.5mm/2.0 x 1.6 x 0.69 inch (L*W*H) Color : Red Material : metal Weight : 33g Package : 1 x High/Low Level Trigger Relay Module Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.