The INFINITER ML-100 is a tool for professionals that enable you to project a visible red laser line, a line up to 100 feet long (at the distance of 29 feet) - suitable for large work surfaces indoor. <br> <br> It can be used as a guideline in alignment, machine vision systems, construction and process control and is ideal for most large-field cutting applications. New feature: ML-100 is now waterproof! <br> <br> ML-100 will save you time and increase your accuracy for many applications, such as wood cutting, stone cutting, and textile cutting. <br> <br> Compact and lightweight features make it very convenient to mount the ML-100 to a worktable or a cutting machine - saving you time and money. <br> <br> The adjustable housing allows for easy mounting and aiming of the highly visible red laser line. <br> <br> It is easy to adjust the module housing into position so you can project the laser line angle you want. <br> <br> The US Wall Mount Type Power Adapter is included ! <br> <br><br> <b>Q&A</b> <br> <br> Q: How long of a visible line can i expect when aimed at a wall?<br> A: The answer is depending on the distance. The key point is that its angle is 120 degrees. Once you know the distance and the angle, then you could calculate how long the red line will be projected at the wall. <br> <br> Q: Will this laser generate a 20 foot line<br> A: Yes, when the distance between a wall and the ML-100 is more than 12 ft., then the projected line would be 20 ft. at a wall. <br> <br> Q: What is the operating temperature range for this product?<br> A: Operating Temperature Range is from -4°F to 140°F. <br> <br> Q: Can this run all day 5 days a week?<br> A: We don't suggest that you run this all day 5 days a week. Its life time will last longer if you shut it off when not in use.<br>Perhaps, you could consider our INFINITER ML-200G, because it can operate 24/5.