INDICATING DEVICES

摘要

1459436 Visible signalling HOTPOINT Ltd 16 April 1974 [16 April 1973] 18246/73 Heading G4F Neon lamps N1, N2 flash periodically and alternately when switch S is closed by a change in the operating condition of an electrical appliance, e.g. by a temperature sensor in a freezer cabinet. The lamps may have differentlycoloured lenses.