Pillar Buzzers

Three status lights:  (Red: stop/wrong answer, Green: start/correct, White: First to buzz in ) Wireless and cordless. Can be used outdoor and indoor. One buzzer, one unique ID, Lock-out function. ID programmable. Power: rechargeable battery, battery life: 6 hours.  Supports up to 50 pillar buzzers. Height 123cm. Wireless range is 60 meters. Standalone pillars do not have buzz in audio. Compatible with all countries plug type and voltage