Part Number:8310-DSSx28. MultiMag Electromagnetic Lock. RCI 8310-DSSx28. with Door Status Sensor. Door Status Sensor. 12V/24V DC, Single Outswinging Door, Surface Mount. Door Status Sensor:Yes. Housing (DxWxL):1-5/8” x 2-7/8” x 10-1/2” (41 x 73 x 268mm).