Siemens Sirius 3TK28 Safety Controller Run test - YouTube
PLC Hardware - Siemens 3TK2801-0AG2, Surplus in Sealed Packaging
Siemens 3TK28 34-2AB20 Safety Relay Press Control Unit, Two Hand Control Unit, Spring Loaded Terminals, 2 NO Enabling Contacts, 24VAC Rated Voltage, 45mm Width: Electronic Relays: Amazon.com: Industrial & Scientific
for the new safety relay SIRIUS 3TK28 3TK2827-1BB40 | eBay
Siemens Sirius Safety Relay with Relay Enabling Circuits - China Relay and Safety Relay
Siemens 3TK28 28-1AL20 Safety Relay, For Emergency Stop and Protective Doors, Auto Start, Screw Terminals, 45mm Width, 2 NO + 2 NO Enabling Contacts, 1 NC Signal Contacts 45mm Width, 2 NO +