Seaward braincells readwrite reader seaward 288a953 which seaward pat tester is best for you help me decideeach braincell contains a microchip memory which requires no battery and can store relatively large amounts of data the real advantage is that these devices not only allow information to be read from them but can also have a new data written to them by the pat tester using the readwrite reader each braincell is completely sealed and can be attached to the appliance by its heavy du