The ceramic switch is compatible with Hydroland B10 and B20 bath batteries. Its diameter is 22 mm, height 47 mm, and hexagon diameter 8.5 mm.
- Manufacturer: Hydroland
- Type: ceramic switch
- Compatibility: B10 and B20 bath batteries
- Diameter: 22 mm
- Height: 47 mm
- Hexagon diameter: 8.5 mm