Optional wired and wireless displays are available. The RD wired display can be up to 100 feet from the controller using 4-conductor telephone cable. The RD100 wireless display can be 100 feet away from controller in buildings and 300 feet line-of-sight. Its built-in rechargeable batteries last up to 3 months and can be recharged from 12, or 24 VDC or 115 VAC.