Product Description
The UT25CL Cable Locator System (Transmitter Unit) is part of the UNI-T UT25CL cable tracing and fault-finding kit, designed to inject a coded signal into electrical circuits so the receiver can accurately trace cables, detect breaks, and identify circuit paths in walls, underground, or conduit systems.
It is widely used by electricians and maintenance technicians for cable identification, fault detection, and circuit mapping in industrial and building installations.
Key Features
• Dedicated signal transmitter for UT25CL cable locator system
• Sends coded 33 kHz tracing signal to cables and wires
• Works with energised and de-energised circuits
• Detects cable breaks, short circuits, and wire routing paths
• Supports multiple selectable signal codes for multi-line tracing
• Adjustable signal strength levels for accuracy control
• Built-in voltage detection for live circuit identification
• Compatible with UT25CL receiver (multi-receiver support system)
• Clear LCD for operating status and settings
• Overload and safety protection for high-voltage input
Technical Specifications
• Product Type: Cable Locator Signal Transmitter
• Model: UT25CL-T (Transmitter Unit)
• System: UNI-T UT25CL Cable Locator Kit
• Operating Frequency: 33 kHz
• Input Voltage Range (Line Detection): AC/DC 8V – 480V
• Power Supply: 6 × 1.5V AA batteries (LR06)
• Signal Strength Levels: 3 adjustable levels
• Code Selection: 0 – 7 coding signals
• Display Type: Segment LCD (backlit)
• Protection Category: CAT III 480V
• Overvoltage Protection: Up to 480V AC/DC
• Measurement Accuracy: ±2.5% (voltage detection)
• Operating Temperature: 0°C to +40°C
• Storage Temperature: -20°C to +60°C
• Housing: Industrial-grade insulated plastic enclosure
• Safety Features: ELV indicator, fuse protection, overload warning
• Compatibility: Works with UT25CL receiver (up to 8 transmitters supported in system)

