Automatic Door Sensor is a microwave radar‑type activation device designed to detect pedestrian movement and trigger automatic sliding and swing doors. The Mace Universal Automatic Door Sensor (model EF‑102H) uses a 24.125 GHz microwave signal to provide reliable, contact‑free detection for automatic doors, electric power doors, glass doors, and similar applications, ensuring quick and safe opening without false triggers from ambient light or temperature changes. It is built to be stable, anti‑interference, and suitable for continuous high‑traffic use.

The sensor operates via a microwave induction method with a short delay time (around 1.5 s) and is rated for low‑voltage control circuits (below 50 V), making it compatible with many standard door operators and control panels. It features a compact, wall‑ or ceiling‑mountable housing (typically about 16×12×10 cm) that can be installed by removing the top cover, connecting the internal wires to the terminal block, and securing it with screws. As a Mace‑branded universal sensor, it offers a cost‑effective, plug‑and‑play option for retrofitting or upgrading existing automatic door systems while maintaining smooth, safe, and responsive door operation.