Physics Lab Kits for Schools and Colleges Bell relay set

Includes all components necessary for setting up the "Wagner's interrupter" and "bell-relay" experiments.
The components are fixed on the bell/relay plate and connected to an extra-low voltage source.
Includes two bridging plugs and one magnetic symbol plate for the bell and relay.

Dimensions:

• 30 cm × 29.7 cm × 7 cm

Connections:

• 4 mm sockets