1.Advanced manual release
2.Boom can rise and fall on left/right sides by setting on the same machine
3.No need to change the balance spring when changing the booms shorter than 6 meters
4.Adopt the 3rd generation machine core
5.Support the INFRARED PHOTOCELL for anti-bumping function (optional)
6.Support the external and internal VEHIVLE LOOP DETECTOR (optional)
7.Auto warming up ,suitable for cold environment.
8.Auto closing can be set
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