Fox Micron MX Bite Alarm 3 Rod Set with Receiver and Presentation Case used

Hi, this is my spare 3 rod set of mxr bite alarms with receiver.Everything works fine apart from 1 of the alarms drains the batteries very quickly and also has some minor cosmetic damage on the rear (see photo) where one of the terminals was soldered (this may have something to do with the battery issue and may be a simple fix). Comes with original presentation box, instructions, lanyard and screwdriver. They have the usual volume tone and sensitivity adjustments and has 6 different led colour options.