With a working range of up to 2,600 feet, the Spectra LL400HV Self Leveling Laser is suitable for large construction projects and vertical alignment applications. This rotary laser features automatic Grade Match and PlaneLok capability. The LL400H is self-leveling horizontally and vertically within ±5 degrees and has an accuracy of ±1/16 inch per 100 feet. It also features a single-axis slope mode that provides grade matching with a self-leveling cross axis for improved accuracy.
The Spectra LL400HV has an out-of-level alert that shuts off the laser level if it is knocked out of place to avoid erroneous readings. The optional Spectra RC402N remote control provides the ability to make grade changes and start automatic alignments from up to 330 feet away. It offers an easy to use menu-driven interface and features a backlit LCD with leveling indicators for easy viewing in low light conditions.
Combined with full weatherproofing and dust proofing, the LL400HV laser level enables construction professionals to operate in adverse environmental conditions. It can also survive drops of up to three feet onto concrete and tripod tip-overs up to five feet due to its metal sunshade and tough composite material housing. Using alkaline batteries, it works up to 60 hours of continuous use and up to 47 hours with the optional rechargeable batteries.
Configuration Options
- LL400HV: With HL760 Receiver And Alkaline Batteries
- LL400HV-1: With HL760 Receiver, Alkaline Batteries, Tripod And Rod (10ths)
- LL400HV-2: With HL760 Receiver, Alkaline Batteries, Tripod And Rod (Inches)
- LL400HV-4: With HL760 Receiver And Rechargeable Batteries
The Spectra HL760 enables the advanced functions of Grade Match and PlaneLok with wireless communication between the laser and receiver. With a unique fingerprint function, the HL760 laser detector only accepts the beam from the laser it is paired with. This feature reduces errors and conflict between contractors working in close proximity with other laser levels.
- LL400HV-10: With CR600 Laser Receiver And Alkaline Batteries
The Spectra CR600 laser receiver is ideal for long-range machine control applications. It has a 270-degree reception and magnetic mount for use on a backhoe, small excavator or skid steer. Rugged, accurate and easy to use, the CR600 provides high, low or on-grade information.
 | No Cost 5-Year Warranty offers no repair charge for parts and labor of the laser. |
 | Shock Proof ensures this construction laser withstands a three feet drop onto concrete. |
 | Optional Radio Remote control transforms slope matching into a single person operation. It is easier to use because it does not have to be aimed at the laser for it to work. |
 | Fingerprint function filters out other lasers that strike the receiver and only accepts the laser that it is paired with. |
 | Grade Match enables contractors to measure an unknown grade value automatically between two elevation points. |
  | Dual Axis PlaneLok keeps the laser beam fixed to a receiver in a set position, making it accurate and error free. |
 | A hard-shelled, portable System Case is available to house the laser, receiver, clamp, tripod, and grade rod. |