Gb - 27be completely compatible with your product.You can purchase the suitable batteries from nuM’aXes or from your distributor.Unscrew the 4 screws on the battery cover and remove the old battery. Insert the newbattery in the position indicated on the plastic casing. A beep sound is emitted indicatingthat the collar is ready for use.If you inadvertently put the battery in the wrong way, the collar will not emit a beep sound.Reposition the battery quickly otherwise you can damage the collar.nB: when you change the battery, your caniFuGue memorises the mode previouslyselected.nB: Due to greater use during your dog’s training, your first battery may not last as longas replacement batteries. changing the contact pointsBefore replacing the contact points, make sure that you have correctly put the collarout of service (remove the battery from its housing).If your dog has a long-haired coat and the short contact points fitted in the factory areunsuitable, unscrew these contact points and replace them with the long ones supplied withthe accessories. they should be moderately tightened by hand. Do not use pliers to tightenthe contact points: this may cause irreparable damage to the product. checking your caniFuGueØchecking it is working properly:You can check that your caniFuGue is working properly at any time and display how it isworking using the test lamp.Before making this check, ensure that your collar is out of service (battery removedfrom the housing).You can then place the test lamp in contact with each of the contact points (make a looparound each contact points). Insert the battery into the collar. Connect the transmitter tothe power supply (power unit plugged into the mains and switch at On).Walk up to the antenna wire. You should first hear the warning beep sound then, as you getcloser to the wire, the test lamp should light up. Your appliance is working perfectly.Before disconnecting the test lamp, make sure you remove the battery!