1. Description: Light source: SMD 3528 Dimension: 1200 x 26mm Input: 110V/220V LED quantity: 240 pcs Luminous flux: 1300-1400lm Power factor: >95% LED viewing angle: 180 Power consummation: 4-12W A series: Double-working Status: If no sound outside, LED tube is in low consumption status, total power is 30% of normal working status The wattage can be designed as per customer's demand),If sound outside,LED tube is working entirely.50S(The time also canbe designed) later, will be low consumption status. B series: Single-working Status: When no sound outside, LED tube is out of service; when sound, LED tube works entirely.50S(The time also can be designed) later, the tube will be out of service again.