The Honeywell LTEL3A-ADT LTE COMM, L3000, ATT, ADT Radio is a cutting-edge LTE communication module designed for seamless integration with the Honeywell LYNX Touch L3000 security system. This device provides reliable cellular connectivity via the AT&T network, enabling fast and secure alarm signal transmission to ADT monitoring services. It ensures uninterrupted communication in environments without landline connections, making it ideal for modern, wireless security solutions. Its compact and efficient design simplifies installation and maintenance. Honeywell LTEL3A-ADT LTE COMM, L3000, ATT, ADT Radio. What you need to know about the return. Please keep all the contents of the box in the original packaging. This is not applicable to those who received a damaged package. To ensure that your order is delivered on time please make sure your address and your full name are correct. Box at this time.