APC NetShelter VX/SX Door Sensor Switch Kit, Magnetic, Security Systems, Wired, 241.3 x 165.1 x 50.8 mm, 450 g APC NetShelter VX/SX Door Sensor Switch Kit. Sensor type: Magnetic, Compatibility: Security Systems. Connectivity technology: Wired. Dimensions (WxDxH): 241.3 x 165.1 x 50.8 mm, Weight: 450 g