Specification :

Intelligent Bel carefully is revised from previous versions, supported with a device that is more stable and has good sound quality.

Specifications:
* 1 set bell quiz
* Include Amplifier
* 5 channel participants
* 1 button jury
* 5 Display fastest viewer ( A, B, C, D, E)
* Different tones of each participant
* Horn
* Installation Cable

The execution of the 3 days.