The safety relays PNOZ s1 and PNOZ s2 are suitable for monitoring emergency stops and safety doors. The devices PNOZ s3, PNOZ s4, and PNOZ s4.1 can also be used to monitor emergency stops or safety doors, and they also cover the monitoring of light curtains. In applications with machines and systems, one PNOZsigma safety relay is used per safety function. In addition to the safe monitoring of emergency stops, safety doors, light barriers, two-hand control devices, and timing, a range of special functions such as safe speed monitoring or safe brake control are available. Many devices are suitable for use at heights of up to 5000 meters. Use PNOZsigma for your application as well!

• Quick installation: with push-in spring-loaded terminals
• 20% reduced wiring effort: contact extension via connection plug
• Easy project planning: all device variants with uniform terminal designation and terminal position, allowing you to quickly assign connections and devices during project planning, installation, and diagnostics
• Maximum flexibility: adjustable operating modes and timing functions
• Instant diagnosis: via 6 LED indicators – no external measuring devices required
• Quick assembly with snap springs: no tools needed
• Tamper-proof: lockable cover for the adjustment elements.