Responder knowledge contest competition hand press on light electronic wireless step frequency intelligent simple 4 groups 6 groups 8 groups 12 groups E90 type eight way four Road children student classroom voice broadcast answering system
Supports up to 32 group that other groups of contact Customer Service 2 set of underlying paragraph All 4 groups based on paragraph All 6 set of underlying paragraph All 8 set of underlying paragraph All 10 set of base
Chip type:
2 4GHz wireless frequency conversion communication
A prompt manner:
Voice broadcast light prompt screen display
Discriminant situation:
Ready to start a foul standby
Extension (group):
1-32 Group
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Items weight estimation 0 g, subject to actual weight
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