Ultra compact energy saving CFL lamps with triple-tube design give an ideal light source for small fixtures and downlighters. The Biax™ T & T/E lamps are electrically interchangeable with Biax™ D and D/E lamps. Biax™ T/E lamps with a 4-pin electrical connection and without an internal starter are designed for high-frequency electronic ballasts. The use of separate electronic ballasts makes them suitable for almost every kind of energy supply: high and low voltages, accumulators, batteries, solar cells and systems that can be dimmed. Triple biaxial tubes.