Sonic Sensor Kit

Reliable performance with fewer setup steps and less downtime.

Sonic Sensor Kit for the TM-4

Clamp-on, non-contact guidance for accurate, stringline-free control.

The TM-4 Sonic Sensor Kit replaces traditional stringline setups with modern, non-contact sensing technology. Using ultrasonic guidance, the system reads surfaces and delivers real-time adjustments that keep the machine aligned and on grade. With a clamp-on design, installation is fast and straightforward, while utilizing ETI’s all inclusive software. The result is consistent accuracy and smoother workflow, all without the hassle of managing stringline.

Engineered for tough jobsite conditions, the Sonic Sensor Kit is ideal for DOT projects, airports, and complex paving jobs where precision is critical. By combining advanced sensing with the TM-4’s tool-based platform, this kit helps reduce setup time, improve reliability, and enhance overall efficiency. It’s a practical way to modernize operations and get the most from every project.

Featured Case Study

TM-4 Dominates Minnesota's CSAH 17 Overlay Project

Contractors asked — and ETI delivered. The TM-4 is a compact, powerful hybrid that combines the functions of a texture cure machine and a work bridge into one adaptable platform. Purpose-built for tight-access paving, it gives crews the ability to tackle projects where larger machines can’t operate.

With remote operation, modern hydraulics, and a low-profile frame, the TM-4 delivers efficiency without compromise. From quick width changes to full ground-level access for adjustments, it’s designed around real contractor needs — doing more with less while keeping projects on track.

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