Sureflap microchip cat flap suitable for a small or medium sized cats. has been briefly fitted to a glass door but not used as our cat is too big to comfortably use the cat flap.
Works with any microchip or you can buy a RFID tag for your cat (RFID tag not included). Reads the microchip to let your cats in and any cat can exit. Can store up to 32 cat identities. Comes with instruction booklet, fitting screws and glass mounting adaptor.