REVEX [Expansion] Transmitter Wireless Entrance Chime Transmitter ⭐︎Unused⭐︎ ◾️Brand: REVEX ◾️Model Name: XP10G ◾️Communication Distance: Up to 180m ◾️Rainproof ◾️Power Supply: 3 AAA alkaline batteries (sold separately) Although it is new and unused, the outer box has some scratches due to home storage. Please understand this before purchasing.