C&K

SWITCH PUSH SPDT RA PCB Vertical

C&K Components

Switch Pushbutton SPST 125MA 125VAC

Grayhill

12 Position DIP Switch (Thru-Hole)

CK Components

ref Farnell : 2320094Switch SMD

Altronics

Push button SPST switch with red LED indicator.Panel cutout diameter of 9.3mm.http://www.altronics.com.au/index.asp?area=item&id=S1064

SQ D

OLD SCHOOL DRUM SWITCH FOR MANUAL REVERSING APPLICATIONS

chinese ebay

rotary encoder from ebay most supplies

HAMLIN

Interlock macho y hembra

BITZER GmbH

The OLC series consists of a screw-in prism unit and an optical level detection device. The prism is installed in the compressor or the vessel and is not included with the OLC. The level detection device can be replaced without opening to the compressor or the vessel. Detection of the level is via infrared light. There is a built-in monitoring system for correct installation.

Doesn't know how it called, it's dual two-positioned button with fixation, perfectly for power switching