Siemens 3SB38 02-2DA3 Standard Operator Enclosure and Pushbuttons, Metal Enclosure, 2 Pilot Devices, 1 NO Green "I" Labeled Pushbutton, 1 NC Red "O" Labeled Pushbutton: Electronic Component Pushbutton Switches: Amazon.com: Industrial & Scientific
SIEMENS 3SB38, 2 Push Buttons with Enclosure 71 x 83mm 4011209538276 | eBay
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Push buttons by Siemens - 35U1 SIRIUS ACT | SIRIUS Command - command and signaling | Siemens USA