Smart Access with RFID Collar Sensor: This smart cat door comes with 3 RFID collar keys and 1 remote control, allowing only your cat to enter or exit. Unauthorized pets or wild animals are kept out-making it a secure cat door that helps protect your home, pet, and cat food. 4 Locking Modes with Remote Control: Choose from 4 smart access modes: Locked, In-Only, Out-Only, or Fully Open. You can easily change the mode using the front "M" button or the included remote control-making this a true electronic cat door. Quiet, Weatherproof & Spacious Cat Door: This weatherproof cat door opens quietly to avoid startling your pet and helps keep out cold drafts. Its 7.7" x 8.3" inner flap fits most cats and small dogs up to 20 lbs. A perfect pet door for cats that offers comfortable, quiet, and reliable access-day or night. Long Battery Life & Low Battery Indicator: Powered by 4 AA alkaline batteries (not included), this automatic cat door runs up to 12 months. A red light flashes to alert you when battery power is low, so your pet is never locked out unexpectedly. Remote battery life also lasts up to 12 months-ideal for a low-maintenance smart pet door. Durable & Easy to Install Anywhere: Built from premium ABS, this RFID cat door is tough, durable, and designed to last. Installs easily on wood, plastic, walls, or pet houses-indoors or outdoors. Whether you're replacing a basic flap or upgrading to a locking cat door, this is a smart solution for secure and stylish access. Smart Cat Door, RFID Cat Door Collar Activated with 3 Collar Sensor Keys & Remote Control, 4 Way Locking Cat Flap Automatic Cat Door with Collar Sensor Color: Black Material: Plastic Package Contents: 1*Smart Cat Door 3 Collar Senso 1*remote control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.