Specifications Overview:
The document outlines the specifications for four models of Topcon's RL-H3 series construction lasers: RL-H3C, RL-H3CS, RL-H3CL, and RL-H3A. All models feature a red visible diode beam with varying power levels and operating ranges. The RL-H3C and RL-H3CS have a 150 m radius, RL-H3CL has a 250 m radius, and RL-H3A has a 350 m radius. Accuracy ranges from ±15 arc seconds for RL-H3C to ±8 arc seconds for RL-H3A. All models have a self-leveling range of ±3° and a rotation speed of 600 rpm. Power is supplied by alkaline batteries, with RL-H3A also supporting rechargeable batteries.

Laser Receiver Specifications:
The LS-70C and LS-70B laser receivers are compatible with these models, offering high precision on-grade detection and audible alarms. They operate on 9 Vdc alkaline batteries with an approximate life of 80 hours and feature auto shut-off after 30 minutes without beam detection.

Features and Benefits:
The RL-H3 series is described as an advanced entry-level construction laser with high-speed self-leveling and smart laser receiver capabilities. The RL-H3CS model offers slope matching capabilities up to ±5%. The series is designed for durability and reliability, with features like heavy-duty glass, rugged body, and weather-resistant controls.

Model-Specific Features:
- RL-H3C: One-button operation, 150 m radius.
- RL-H3CS: Slope matching capabilities, 150 m radius.
- RL-H3CL: One-button operation, 250 m radius.
- RL-H3A: One-button operation, 350 m radius, supports rechargeable batteries.

Conclusion:
The RL-H3 series offers a range of models to meet various construction needs, providing high precision and reliability at a competitive price point. The series is suitable for general construction tasks, including layout and grade control, with features that enhance efficiency and ease of use.