Siemens 3TK28 Safety Relay 3TK2802-0DB4 DC 24V | eBay
PLC Hardware: Siemens 3TK2801-0DB4 Contactor Combination, 1 NO + 1 NO, 24V DC
3TK2826-1BB41 | Relais de sécurité Siemens 3TK28, 24V c.c., 1, 2 canaux, 4 contacts de sécurité | RS
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