Crossroads traffic lights, you can direct traffic, green light can
go, red light can not line; yellow light to pay attention to wait,
everyone to comply with traffic lights.
Traffic light assembly model is a popular science education kit, you
can easily let children know the traffic lights. Need to self-equipped
with two 5-cell battery. Small bulbs for the diode, there are positive
and negative points, the long pin is connected to the positive (the red
box is the battery box positive). If it does not turn on during
power-on, try reverse-connection.
A large number of cash, welcomed the wholesale and inquiry wholesale.
【Material】: plastic
【Size】: 75 * 75 * 165mm
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