The **KGS124-R/K** refers to a specific series of **Rotary DIP Switches** manufactured by companies like **ECE** (Excel Cell Electronic). These components are used to set binary or hexadecimal values manually on a printed circuit board (PCB). --- ### 1. Technical Specifications The "124" in the part number typically denotes the number of positions and the coding type. | Feature | Specification | | :--- | :--- | | **Type** | Rotary DIP Switch | | **Number of Positions** | 10 (Decimal) or 16 (Hexadecimal) | | **Code Type** | BCD (Binary Coded Decimal) or Real/Complementary Hex | | **Mounting Type** | Through-hole (THT) | | **Contact Rating** | 100mA, 5V DC (Switching); 100mA, 50V DC (Non-switching) | | **Actuator Style** | Flat or Arrow-shaped (requires screwdriver) | --- ### 2. Key Electronic Components & Materials * **Gold-Plated Contacts:** The internal wiping contacts are usually gold-plated to prevent oxidation and ensure low contact resistance over long periods. * **Thermoplastic Housing:** The body is made of high-temperature UL94V-0 grade plastic, making it resistant to heat during wave soldering. * **Wiper Mechanism:** A mechanical rotor that bridges specific internal pins to create a binary output corresponding to the dial position. --- ### 3. Pin Configuration & Logic The switch typically features 4 output pins and 1 common pin. | Position | Pin 1 (1) | Pin 2 (2) | Pin 3 (4) | Pin 4 (8) | | :--- | :--- | :--- | :--- | :--- | | **0** | OFF | OFF | OFF | OFF | | **1** | **ON** | OFF | OFF | OFF | | **5** | **ON** | OFF | **ON** | OFF | | **F (15)** | **ON** | **ON** | **ON** | **ON** | --- ### 4. Applications The KGS124 series is commonly found in the following electronic environments: 1. **Industrial Controls:** Setting Modbus or CAN bus node addresses. 2. **Telecommunications:** Configuring frequency bands or hardware IDs. 3. **Security Systems:** Setting zones for alarm panels. 4. **Embedded Systems:** Selecting boot modes or hardware revisions.