A small clear indicator light bulb for telephone and telecom equipment, rated for 48 volts and lasting 5000 hours.

A small clear indicator light bulb for telephone and control panel systems, rated for 28 volts, lasting 5000 hours.

A small clear indicator light bulb designed for telephone systems and control panels, rated for 6 volts.

A small clear light bulb for telephone and telecom control panels, rated for 30 volts and lasting 6000 hours.

A small clear indicator light bulb designed for telephone and switching equipment, rated for 48 volts.

A small clear indicator light bulb designed for old telephone and switchboard equipment, running on 60 volts.

A small clear indicator light bulb for 24V telephone and control equipment that lasts 5000 hours.

Small clear light bulb designed for telephone systems and low-voltage indicator panels, running on 6 volts.

A small clear indicator light bulb for old telephone and switchboard systems that runs on 28 volts.

A small clear indicator light bulb designed for telephone and control panel equipment, rated for 30 volts.

A small clear 12-volt indicator light bulb designed for telephone panels and control equipment.