DA101S evaluation system for safe and static speed monitoring The DA101S system is a safe static monitor designed to detect static and deceleration in industrial environments. This device has the ability to monitor two input channels and provides a separate output relay for each channel. Using visible LEDs, operation status, error and switching status can be easily recognized. **Technical specifications of DA101S** - **Model**: DA101S - **Type**: Safe static monitor - **Safety Capabilities**: Approved for use in machinery safety systems up to Performance Level e (PLe) according to EN ISO 13849-1 and Safety Integrity Level (SIL) 3 according to IEC 61508. - **Dimensions**: It has a narrow design with a width of 25 mm. - **Power**: requires a 24 volt DC power supply. - **Outputs**: including two safety relay outputs and one solid state PNP feedback output. - **indicator LEDs**: to display the input and output status. **Applications** This system is especially used to detect stagnation and speed reduction in industrial machinery. Since it is difficult to verify "real motionlessness", this device is designed so that the user can set it to detect a low frequency. If the frequency decreases below the set limit, the relay output is activated. The DA101S is particularly suitable for use in door locking systems, which require high safety in access to equipment and reduced risks associated with machinery in operation. **Price** The price of this monitor is usually around 250 to 300 euros, which can vary depending on the supplier and market conditions. This system is considered one of the preferred options for monitoring the safety and efficiency of machinery due to its high capabilities and assurance in maintaining safety in industrial environments.