The body of the level is IP54 rated, meaning it is resistant to debris/water. The overmoulded housing and thick glass protect the tool and help maintain calibration under jobsite conditions. Full-time pulse mode allows use with detector. Works with DE0892G detector (not supplied) up to the distance of 50 metres. Specification: Laser Class: 2, Level Accuracy: ±3mm@10m. Self-Levelling Range: 4°. Visibility Indoor: 20m. Power: 3 x AA batteries (supplied). Thread: 1/4in.