The Dold BA7905 is a versatile and reliable standstill and rotation monitor designed for safety-critical applications in industrial machinery. It effectively monitors the speed of motors and drives, ensuring that access to hazardous areas is only granted when the machine has come to a complete stop. This safety relay can also be configured to detect overspeed or underspeed conditions, providing comprehensive protection for both personnel and equipment. Its compact design and compatibility with various sensor types (like PNP, NPN, or contacts) make it a flexible solution for integration into new or existing safety circuits, compliant with high safety standards such as EN ISO 13849-1.