Features: Well-designed:Compact design exquisite workmanship and elegant appearance. There are different sounds and lighting hints for incorrect password correct password and insufficient power. Energy Saving And Environmental Protection: The four section seven alkaline battery can be used normally for more than 10 months. Easy Installation: Just need to open a 12 mm through hole and then screw four screws on the panel and three screws on the lock. High Quality Material:Made of high quality material sturdy and eco-friendly durable and safe to use. After-sales Service: If there is any problem with our products please contact us first we will provide you with the best solution in the fastest time. So why not give it a try? Specifications: Material: ABS/Metal Size: 58*85mm Control Mode: Personal Mode/Public Mode Power Supply Type: 4 AAA Batteries(not included Notes: 1. Due to the lighting effects and shooting angles there is a color difference in the product please understand. 2. Due to manual measurement there is a tolerance in the product size. includes: 1* Password Panel 1* Lock Body 1* Lock Buckle 1* Installation Accessory Package "