Based on the part number **M2UDS2-23-R2/N**, this component belongs to the **M2U Series** of industrial-grade timers/monitors, typically manufactured by companies like **Grainger (Dayton)** or specialized automation hardware providers. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. General Specifications The M2UDS2 series consists of **True Off-Delay Timers**. These are designed to keep a circuit active for a set duration after the input power is removed. | Feature | Specification | | :--- | :--- | | **Function** | True Off-Delay (Delay on Release) | | **Input Voltage** | 24V AC/DC or 120V AC (Series dependent) | | **Time Range** | 2 to 30 Seconds (Adjustable) | | **Contact Form** | DPDT (2 Form C) | | **Mounting** | 8-Pin Round Plug-in (Octal Base) | | **Output Rating** | 10A @ 240VAC / 30VDC | --- ### 2. Functional Analysis The "True Off-Delay" functionality is achieved through internal energy storage (usually a large capacitor). * **Power Applied:** When power is first applied, the internal relay energizes immediately, and the contacts switch positions. * **Power Removed:** When the control power is cut off, the timer begins its countdown using stored energy. * **Timing Out:** Once the set time (2-30 seconds) expires, the relay de-energizes, and the contacts return to their normal state. * **Reset:** If power is reapplied during the timing cycle, the timer resets and the relay remains energized. --- ### 3. Pin Configuration (8-Pin Octal) The device uses a standard industrial pinout for 8-pin relay sockets. | Pin Number | Function | | :--- | :--- | | **2 & 7** | Input Power (Control Voltage) | | **1** | Common (Pole 1) | | **3** | Normally Open (Pole 1) | | **4** | Normally Closed (Pole 1) | | **8** | Common (Pole 2) | | **6** | Normally Open (Pole 2) | | **5** | Normally Closed (Pole 2) | --- ### 4. Part Number Breakdown The suffixing usually denotes specific revisions or environmental ratings: * **M2U:** Series identifier (Miniature Industrial Timer). * **DS2:** Off-Delay functionality with DPDT contacts. * **23:** Indicates the timing range (e.g., Code 23 often represents the 2-30s scale). * **R2/N:** Revision 2, Non-sealed or specific RoHS compliance indicator. --- ### 5. Application Use Cases * **HVAC Systems:** Keeping a fan running for a short period after the heater shuts off. * **Safety Buffers:** Ensuring a machine completes a cycle even if a main power switch is tripped. * **Motor Control:** Preventing rapid cycling or providing "coast-down" time for industrial motors.