Based on the search results, "STRUT LJ100" does not appear as an exact match. However, several products with similar model numbers (LJ-100, LJ100 series) exist across different categories. Here's a breakdown of the most relevant findings:

1. Seismic Adhesive Plate Connector (LJ-100/G)  
   - Function: Used to connect fixtures with adhesive sheets, increasing floor area to prevent falls.  
   - Specifications:  
     - Seismic resistance: Intensity 6 equivalent  
     - Dimensions: 113 × 113 × 0.5 mm  
     - Weight capacity: ≤100 kg (per fixture); unit weight: 8 g  
     - Package: 4 units/box  
   - Applications: Structural safety in buildings or equipment .  

2. ST-LJ100 Series Pressure Transmitter  
   - Type: Strain-gauge pressure sensor for industrial drilling.  
   - Key Features:  
     - Measurement: Mud, drilling fluid, solid-liquid mixtures (0–150 MPa range).  
     - Output: 4–20 mA, 0–5V, or 0–10V signals.  
     - Accuracy: Up to ±0.1% full scale (FS).  
     - Robustness: IP67 protection, 316 stainless steel, withstands 500% overload pressure.  
     - Applications: Oil/gas drilling rigs, high-pressure fluid monitoring .  

3. Fiber Optic Transceiver (LJ 10/100SC25)  
   - Function: Converts Ethernet UTP interfaces to fiber optics for long-distance data transmission.  
   - Compatibility: 10/100/1000 Mbps networks, single-mode fiber.  
   - Use Cases: Network infrastructure, server-switch connections .  

Key Insight:  
"STRUT" might refer to a structural component (e.g., seismic connector) or a brand/variant prefix (e.g., ST-LJ100 pressure transmitter). If your context involves:  
- Building safety: Consider the LJ-100 adhesive plate .  
- Industrial pressure sensing: The ST-LJ100 transmitter is relevant .  
- Networking: The LJ-series transceiver applies .  

For precise identification, provide additional context (e.g., industry, application).