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An example of a early alarm.

Alarm

An example of a early alarm.

A device, such as a siren, used in announcing the outbreak of a fire.

Fire Alarm

A device, such as a siren, used in announcing the outbreak of a fire.

A shout or bell to warn that fire has broken out.

Fire Alarm

A shout or bell to warn that fire has broken out.

A fitted device which lets you know when there is a gas leak in the house, meaning you should get out straight away just in case.

Gas Alarm

A fitted device which lets you know when there is a gas leak in the house, meaning you should get out…

A device on an automobile for making a warning noise.

Automobile Horn

A device on an automobile for making a warning noise.

Incandescent bulbs are made in a wide range of sizes and voltages, from 1.5 volts to about 300 volts. They require no external regulating equipment and have a low manufacturing cost, and work well on either alternating current or direct current.

Incandescent Lamp

Incandescent bulbs are made in a wide range of sizes and voltages, from 1.5 volts to about 300 volts.…

A Memograph is a clock that is designed to make a loud sound at a specific time. The primary use of these clocks is to awaken people from their sleep in order to start their days in the mornings, but can also be used for short naps; they are sometimes used for other reminders as well.

Memograph Clock

A Memograph is a clock that is designed to make a loud sound at a specific time. The primary use of…