Field-Ready Rotary Laser Performance at a Practical Price Point
The Topcon RL-H5A DB2 Rotary Laser Kit (1021200-49-K1) gives site contractors and concrete crews a reliable, no-compromise leveling solution without paying for features you'll never use in the field. Backed by Topcon's decades of precision instrument manufacturing, the RL-H5A is built to handle the day-to-day rigors of grading, footing layout, drainage work, and interior leveling across a 1,000-foot diameter working range. This complete kit ships ready to work — unbox it on the jobsite and you're measuring within minutes.
Package Overview & Jobsite Applications
The 1021200-49-K1 bundle pairs the RL-H5A laser head with Topcon's LS-80X digital receiver, a heavy-duty aluminum tripod, a tenths-graduated grade rod, and a rechargeable battery set. Whether you're checking subgrade elevation across a large slab pour, setting batter boards for a foundation, or establishing finished floor height inside a structure, this kit covers the fundamental leveling tasks that drive productivity on commercial and residential job sites alike.
Key Specifications
- Model: Topcon RL-H5A DB2
- Part Number: 1021200-49-K1
- Self-Leveling Range: ±5° automatic
- Working Diameter: Up to 1,000 ft (with LS-80X receiver)
- Accuracy: ±1/16 in at 100 ft (±1.5mm at 30m)
- Rotation Speed: 600 RPM
- IP Rating: IP66 — dust-tight and water-jet resistant
- Power: Rechargeable NiMH battery pack; up to 100 hrs runtime
- Receiver: Topcon LS-80X digital grade rod receiver
- Tripod: Aluminum contractor tripod, 5/8 in x 11 thread
- Rod: Tenths-graduated fiberglass grade rod
What's in the Kit
- Topcon RL-H5A DB2 rotary laser transmitter
- LS-80X digital laser receiver with mounting bracket and clamp
- Rechargeable NiMH battery pack + AC charger
- Heavy-duty aluminum tripod with wing-nut leg locks
- Tenths-graduated fiberglass grade rod
- Carrying case for laser head and accessories
- Operator's manual and factory calibration certificate
Job Applications
Concrete Flatwork & Slabs: Set the RL-H5A at a central point and sweep a full 360° reference plane across your entire pour area. The LS-80X receiver clips to a grade rod and gives your crew audible and visual cut/fill guidance without line-of-sight dependence on a single person.
Site Grading & Drainage: Establish consistent subgrade elevations across a pad or verify positive drainage slopes. The 1,000 ft working diameter means one instrument setup covers most residential and light commercial grading operations.
Foundation & Footing Layout: Use the kit to set batter boards at consistent elevation before excavation, and verify footing form heights before the pour — critical steps that prevent costly elevation errors downstream.
Interior Finish Work: Suspended ceiling grids, floor leveling compounds, and partition framing all benefit from a horizontal reference plane. The RL-H5A's compact form and quick self-leveling make it equally capable indoors and out.
Compatible Accessories
- Topcon LS-80L Laser Receiver — Extended range model
- Topcon RC-40 Wireless Remote Control
- Replacement NiMH Battery Pack for RL-H5A
- Aluminum Grade Rod Extensions — Tenths graduated
- Heavy-Duty Laser Carrying Case with foam insert
Related Guides
- How to Set Up and Calibrate a Rotary Laser on the Jobsite
- Rotary Laser vs. Line Laser: Choosing the Right Tool for Your Project
- Using a Grade Rod and Receiver for Accurate Elevation Checks
- Topcon RL-H5A vs. RL-H5B: What's the Difference?
Frequently Asked Questions
- Does the RL-H5A work for grading slopes, or is it horizontal-only?
- The standard RL-H5A is a horizontal self-leveling laser. It does not project a user-defined grade plane. For slope or dual-grade work, look at the Topcon RL-H5B or a grade laser model. For most flatwork, foundations, and interior leveling the RL-H5A is the right tool.
- What is the maximum range of the LS-80X receiver included in this kit?
- The LS-80X receiver extends the working diameter to 1,000 feet under good lighting conditions. In bright direct sunlight, outdoor range may be reduced; use the receiver's sunshade and ensure it is pointed toward the rotating laser head for best signal acquisition.
- Can I use the RL-H5A indoors without the receiver?
- Yes. Indoors and in shaded conditions you can read the visible laser beam directly on a wall or rod without the receiver, useful for ceiling grid and partition layout. The LS-80X receiver is essential for outdoor use where the beam is not visible to the naked eye.
- Is this kit covered by a Topcon warranty?
- Yes. As an authorized Topcon dealer, Express Tools sells the RL-H5A with the full Topcon manufacturer's warranty — one year on parts and labor. Topcon also offers calibration and repair services through their authorized service network.
Frequently Asked Questions
Does the RL-H5A work for grading slopes, or is it horizontal-only?
The standard RL-H5A is a horizontal self-leveling laser. It does not project a user-defined grade plane. For slope or dual-grade work, look at the Topcon RL-H5B or a dedicated grade laser model. For flatwork, foundations, and interior leveling the RL-H5A is the right tool.
What is the maximum range of the LS-80X receiver included in this kit?
The LS-80X receiver extends the working diameter to 1,000 feet under good lighting conditions. In bright direct sunlight, outdoor range may be reduced. Use the receiver's sunshade and keep it oriented toward the laser head for best signal acquisition.
Can I use the RL-H5A indoors without the receiver?
Yes. Indoors or in shaded conditions you can read the visible laser beam directly on a wall or rod without the receiver — useful for ceiling grid and partition layout work. The LS-80X receiver is essential for outdoor use where the beam is not visible to the naked eye.
Is this kit covered by a Topcon warranty?
Yes. As an authorized Topcon dealer, Express Tools sells the RL-H5A kit with the full Topcon manufacturer's warranty — one year on parts and labor. Topcon also supports the instrument through their authorized calibration and repair service network.