Measure from the door edge to the center of the lock hole. Standard commercial backsets are

However, the reliance on the Simplex Hardware Catalogue PDF also presents notable challenges. Unlike open-protocol systems (such as BACnet or Modbus), Simplex uses a proprietary communication protocol known as IDNet or MAPNET II. Consequently, the hardware catalogue is not merely a neutral reference; it is a gatekept document. Access to the most current and comprehensive PDFs is often restricted to authorized Simplex distributors and certified technicians. This closed ecosystem ensures system integrity and prevents counterfeit or incompatible parts from entering a life-safety network, but it can also lead to vendor lock-in. An independent electrician without a dealer login cannot simply download the full catalogue, potentially increasing maintenance costs for building owners.

This in-depth, color-illustrated PDF is far more than a simple parts list. It is a complete roadmap to Simplex solutions, providing the technical and logistical information needed to design and specify a life-safety system. The catalogue is available in multiple languages, including regional versions for North America and "Global Excluding USA" editions. It contains structured data designed to help you quickly locate part numbers, data sheets, and system configurations, making it an ideal showcase tool for demonstrating Simplex's portfolio to customers.

: Codes are easily changed via the keypad without removing the lock from the door.