... cell for anti-bumping function (optional)Supports the external and internal vehicle loop detector (optional)Traffic light interfaceWire control ... Technical data:Running time: 1, 3, and 6sBoom type: straightMaximum boom length: 3, 4.5, and 6mBoom dimension: 45 x 80mmBoom weight: ... 3, 4.5, and 6kgVoltage: 220V ±10%, ...