I'm running an unfinched DIY battery tank. The lid is turned from POM and has only one passage for the cable. The rotary switch has a small neodymium magnet with which a reed contact in the tank is actuated. The corresponding blind hole hole is available, the reed contact is not. The rotary switch snaps into place in two positions at 180° (on/off). The housing is a standard pipe DIN11850 Series 2 in DN80 from beverage technology, 85mm on the outside and 81mm on the inside. The tube is 300mm long, the matching blank for the floor is enclosed.
Price 70,-EUR incl. shipping