There are two micro switches, each with a black button on the top. "IN OUT" is printed in blue on a white paper label at the front of each. The back reveals resistors and transistors of varying type.
Manufacturer
MICRO SWITCH
Place Manufactured
Freeport, ILL., U.S.
Identifying Numbers
Other number
1PB2001
Stamped into the metal on the front of on of the switches
Other number
1PB2004
Stamped into the metal on the front of one of the switches
