The Onity TESA Outdoor Wall Reader LA22EF 544059 is a replacement hotel lock that offers a unique backdoor password feature for modifying rooms. This silver-colored wall reader, model HT24, is manufactured in the United States and does not require any batteries. With its modified item status, this product provides a secure and convenient solution for managing access control in hotels. I believe it works, but I am not certain, sold as-is.