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RT Series
RT - What obstacles need protection?
Obstacles that are vertical, rigid and higher than 15 cm (6 in), such as trees or telephone poles, do NOT need to be protected by the Perimeter Wire. The mower will bump into them and turn away.
Lower than 15 cm: Objects lower than 15cm must be surrounded with the perimeter wire.
Soft obstacles such as flower beds, ponds, or small trees must be protected by setting Perimeter Islands.