Product Description
Bachmann SDO204 Secure Digital Output Module
The Bachmann SDO204 is a secure digital output module designed for safety-critical applications within the Bachmann M1 automation system. It provides four safety-related digital outputs, enabling the reliable control of actuators such as contactors, relays, and solenoid valves. Engineered for high-demand environments, the SDO204 is certified to meet stringent safety standards, including SIL 3 and PL e, ensuring maximum operational safety and system integrity. Its robust design features comprehensive diagnostics for each channel, short-circuit protection, and overload detection, making it an ideal solution for implementing dependable safety functions in industrial machinery and plant engineering.
Technical Specifications:
- Number of Outputs: 4, safety-related
- Safety Certification: SIL 3 according to IEC 61508, PL e / Cat. 4 according to EN ISO 13849-1
- Nominal Output Voltage: 24 VDC
- Maximum Output Current: 2 A per channel
- Switching Principle: High-side switching
- Operating Temperature: -25 to +60 °C

Bachmann SDO204 Secure Digital Output Module
High-performance Bachmann SDO204 secure digital output module featuring 4 safety-related channels. Certified for SIL 3 and PL e, this 24 VDC module ensures reliable control in demanding industrial safety applications.







