Atlas Copco 8433057013 Stacklight ESL-04 Module

Atlas Copco ESL-04 STANDARD Stacklight module (SKU 8433 0570 13, model 8433057013) is a modular visual and audible signaling unit designed for high-throughput manufacturing lines. It combines four configurable indicator lights with a built‑in push button, a configurable key switch, and a buzzer within a compact stacklight housing that can be integrated with Atlas Copco controllers via a 24 V DC I/O Bus and two daisy‑chain I/O bus connections. The unit draws 9.5 W at 24 V and measures 479 mm in length (18.9 in), 75 mm in height (3.0 in), and 100 mm in width (3.9 in), weighing about 1.2 kg (2.7 lb). It supports two external inputs and two external outputs, two I/O bus connectors (with a termination plug for the second bus when at the end of a bus line), external power, and two text slip fields for front‑panel labeling. Operating temperature ranges from 0 to 50 C (32 to 122 F); Stacklight ESL‑04 is described as a flexible light and switch device that interfaces with controllers equipped with I/O bus connectors, making it suitable for signaling and control in manufacturing environments.