TF Non-Contact Voltage Detection and Indication System

OHE High Voltage Presence Absence detection and indication system
  • Advanced Non-Contact Sensing: A state-of-the-art system capable of detecting high voltage (120V to 33kV and above) from a distance—up to 15 meters—without any physical contact.
  • Clear Visual Indicators: Equipped with a dual/single side LED display that clearly shows
    • RED – Voltage Present
    • GREEN – Voltage Absent
    • YELLOW – Sensor Failure
  • Wired Signal Extension: The RED, GREEN, and YELLOW indications can also be extended through wired outputs, enabling integration with external alarm, display, or automation systems.
  • Adjustable Sensing range: Configurable via built-in Wi-Fi UI; users can set cutoff voltage and sensitivity (1–5) to fine-tune detection range based on operational needs.
  • Robust and Reliable Design: Maintenance-free sensor with high efficiency and built to operate in extreme conditions (−30°C to +70°C, up to 5000 meters altitude).
  • Versatile Deployment: Suitable for industrial, railway (OHE), and high-voltage environments. Comes with waterproof or non-waterproof enclosures, 12”x6” display (customizable), and rugged connector interfaces.
  • Smart Connectivity: Built-in Wi-Fi enables real-time adjustment through an easy-to-access web interface.
  • Proven Detection Range:
    • 240V: Up to 2 meters
    • 11kV: Up to 5 meters
    • 25kV: Up to 10 meters
    • 33kV: Up to 15 meters

Sensor Specifications

Power Input
  • Input Voltage: 5–12V DC
  • Battery backup (optional)
  • Protections: Short circuit, Reverse polarity
  • Cooling: Free air convection
Operating Conditions
  • Operating Temperature: −30°C to +70°C
  • Operating Altitude: Up to 5000 meters
  • Enclosure Options: Enclosed (non-waterproof and waterproof)
Detection Capability
  • Sensing Voltage Range: 240V – 33kV AC and above
  • Contactless Sensing Distance:
    • 240V: Up to 2 meters
    • 11kV: Up to 5 meters
    • 25kV: Up to 10 meters
    • 33kV: Up to 15 meters
  • Adjustable Detection Range: Sensitivity (1–5) and Cutoff Value configurable via Wi-Fi UI
Connectivity & Interface
  • Sensor Communication: Built-in Wi-Fi for UI access
  • Configuration: Cutoff value and sensitivity configurable via web-based UI
  • Power Connector: Circular 2-pin/4-pin Male-Female OR USB Type-C
Communication with External system

Wi-Fi, Bluetooth, LoRa(Long Range), Wired

Mechanical
Size: 104mm × 73mm × 21mm — ergonomically enclosed casing designed for strong grip and field durability.
Weight: 200g

Indication Panel Specifications

Power Input
  • Input Voltage: 85–264V AC (Auto-select)
  • Surge Withstand: Up to 300V AC for 5 seconds
  • Power Consumption: Approx. 17W
  • Protections: Short circuit, overload, over-voltage
  • Cooling: Free air convection
Operating Conditions
  • Operating Temperature: −30°C to +70°C
  • Operating Altitude: Up to 5000 meters
Display
  • Type: LED display (Single side / Dual side configurable)
  • Size: 12″ x 6″/24″ x 12″(Customizable on request)
  • Visual Indicators:
    • RED – Voltage Present
    • GREEN – Voltage Absent
    • YELLOW – Sensor Fault
Connectivity & Interface
  • Power Connector: Circular 3-pin Male-Female
  • Display Connector: Circular 2-pin/4-pin Male-Female
Communication with Sensor
Wi-Fi, Bluetooth, LoRa(Long Range), Wired
Signal Output (Optional)
  • RED, GREEN, and YELLOW signal outputs extendable via wire for integration with external systems
Mechanical
Weight : 5.4kg

Why Choose TechFuture’s System?

Truly Non-Contact Detection
  • Detects AC voltages from 240V to 33kV+ without touching the wire ensures operator safety from a safe distance.
Long-Range Sensing
  • Industry-leading detection distance — up to 15 meters for 33kV lines, 10 meters for 25kV, and 2 meters even for 240V.
Real-Time Visual Alerts
  • Clear LED display indicators with intuitive color codes (RED – Voltage Present, GREEN – Voltage Absent, YELLOW – Sensor Fault).
Adjustable Range through UI
  • Fine-tune detection range and threshold via Wi-Fi-based user interface, no special app needed — just connect and configure through a web browser.
Maintenance-Free & Reliable
  • No moving parts, no calibration required. Designed for continuous, long-term use with high efficiency, reliability and durability.
External System Communication
  • The sensor can communicate or send signals to external systems through Wi-Fi, Bluetooth, LoRa or Wire
Signal Extension Capability
  • Sensor and indication panel can be installed at different locations, allowing voltage detection in one place and indication at another — ideal for hard-to-reach or dangerous areas. It also enables integration with external alarm, display, or automation systems.
Customizable Display Options
  • Available in dual or single side configurations; display size adjustable as per site or customer requirement.
Field-Proven in Harsh Environments
  • Works from −30°C to +70°C, and up to 5000 meters altitude — ideal for both indoor and outdoor setups.
Rugged, Industrial-Grade Build
  • High-quality enclosures (non-waterproof & IP65 waterproof), with secure circular connectors for both sensor and display units.
Developed In-House with Full Support
  • Entire system is R&D driven, designed, and manufactured by TechFuture Innovations — ensuring prompt support, customization, and future upgrades.
Trusted by Metro & Rail Projects
  • Already field-tested and deployed in Overhead Equipment (OHE) voltage monitoring for high voltage railway systems. 
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