Siemens Siemens 3RK1405 Series Input/Output Module, 2 Inputs, 2 Outputs, 24 V Part: 3RK1405-1BQ20-0AA3

Siemens ASIsafe compact input-output module for safety-critical industrial automation systems.

Siemens Siemens Dual-Channel Safety Monitoring Safety Relay, 2 Safety Contacts Part: 3RK1105-1BE04-4CA0

Siemens safety relay with dual channels and automatic reset for machinery protection.