Bullet_point: ['Alignment arrows and lock and unlock symbols provide a visual indication that devices are properly connected', 'Blades are recessed for protection against bending and breaking', 'Cord grip screw recess minimizes screwdriver slippage', 'External keying provides quick mating of devices', 'One-step automatic Neoprene sealing gland and engineered thermoplastic guard assure sealing when device is fully connected'] (Page 1)