Lawn Boundary Cable is the signal line buried within the lawn boundary line to guide the lawn mower. 1 Wire is usually made of tinned copper, has good flexibility. The insulation and sheath are made of high density PE, which can effectively cope with the corrosion of the outside environment. 2 The cable flexibility is higher, as we weave a metal mesh around the wire to enhance signal shielding and prevent rats and other animals from biting.