3.Compact size and : this module can fit easily in various applications without taking up much space. 2.Professional design: Made with high-quality elements, this relay module is designed to be easy to install and create a environment. It ensures the proper interlocking of doors, providing security and peace of mind. 1.Interlocking relay module for door interlock : An for egress control of two doors, such as in or prisons. When the first door opens and closes properly, the second door for unlock and open. 4.Max overload capacity and signal output: The module supports a maximum overload of 5A 24V and is suitable for fail-safe electric locks with signal outputs. It guarantees reliable and efficient operation. 5.Wide operating temperature range and humidity tolerance: With an operating temperature range of -20°C-+70°C and suitable humidity levels of 5-90%, this module can perform well in various environmental conditions., Weight: 0.0881849048 pounds, Manufacturer: Kueohse