Sureflap cat door works off pets microchip and prevents intruder animals from entering while letting your pet in and out. Programmable up to 32 pets using common pet chips and has selective entry but any animal can exit OR it can be locked to keep your pet in. It can also let you pet in and prevent it from getting out, handy when you want to take it to the vet. This is new in its box and was purchased Feb 2017, it has a 3 year warranty. 4 X AA Batteries last approx. 6mths with a low battery warning signal. Visit the manufacturers website for video and details http://petaccesssolutions.com/ - this model is the microchip cat flap.
Can be installed in doors, glass or walls. Full installation and user instructions included.
We purchased the wrong size ($169.99 + taxes) - perfect for cats and small dogs up to 13 lbs.
do NOT contact me with unsolicited services or offers