General description The Bosch GLL 3-80 C Professional 360° Line Laser projects 3 x 360° lines for excellent visibility. It features innovative CAL Guard monitoring and a Bluetooth® connected smartphone app for remote-control use, contactless adjustments, and high precision. This line laser is designed for various applications including building floors, installing windows, mounting shelves, laying drainage pipes, building framework for drywall, and laying tiles. It is compact, easy to handle, and extremely robust. Technical specifications Accuracy: ±0.2 mm/m Self-levelling Range: ±4° Working Range: 30m Working Range with Receiver: 120m Laser Diode: 630 - 650 nm, < 10mW Laser Class: 2 Levelling Time: 4 Seconds Power Supply: 12V Li-ion (NOT supplied) or 4 x AA 1.5V LR6 Batteries (supplied) Operating Temperature: -10-40°C Storage Temperature: -20-70°C Dust and Splash Protection: IP54 (except for the lithium-ion battery and AA1 battery adaptor) Tripod Thread: 1/4in, 5/8in Weight: 0.9kg