Non Contact Voltage Detection and Indication System
HVDS-2412

Sensor

Advanced Non-Contact Sensing

A state-of-the-art system capable of detecting high voltage (230V to 33kV and above) from a distance—up to 15 meters—without any physical contact.

Adjustable Detection range

Configurable via built-in Wi-Fi UI; users can set parameters to fine-tune detection range based on operational needs.

Smart Connectivity

Built-in Wi-Fi enables real-time adjustment of detection range through an easy-to-access web interface.

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 and rugged connector interfaces.

Proven Detection Range
  • 230V: Up to 2 meters
  • 11kV: Up to 5 meters
  • 25kV: Up to 10 meters
  • 33kV: Up to 15 meters
Connectivity with external system/indication panel
  • Wired
  • Wireless (Wi-Fi, Bluetooth)
  • LoRa (Long Range Wireless)
Rechargeable Battery backup 🔋

Model: HVDS-2412-HB, HVDS-2412-B

Indication Panel

Large Industrial Display

Display Size: 24” × 12”
Dual side display
Specially designed for :

  • Railway yards
  • OHE sections
  • Metro depots
  • Large industrial plants

This large display ensures clear readability even from long distances.

Clear Visual Indicators

Equipped with a dual/single side LED display that clearly shows

🔴 RED – Voltage Present

🟢 GREEN – Voltage Absent

🟡 YELLOW – Sensor Failure

Line number and status text display

HVDS-2412 can display custom text such as

  • Line Number (Line 1, Line 2, etc.)
  • “POWER ON”
  • “POWER OFF”
  • Custom railway terminology

This helps operators identify the exact OHE section instantly.

Long-Distance Visibility

Display clearly visible from upto 400 meters. Ideal for:

  • Drivers approaching yard
  • Maintenance staff
  • Control room operators
  • High-risk HV zones
Integrated Hooter 🔊

The hooter behaviour can be configured separately for:

🔴 RED Indication (Voltage Present)

🟡 YELLOW Indication (Sensor Failure)


Configuration is done via built-in Wi-Fi web interface.

Hooter Modes🔊

1️⃣ OFF Mode

Hooter remains OFF for that indication.

2️⃣ FOREVER Mode

Example: RED light ON → Hooter continuous until voltage removed.

3️⃣ TIMED Mode

Hooter sounds for a preset duration.

Example: RED detected → Hooter sounds for 10 seconds → Stops.

Timing configurable via Wi-Fi UI (e.g., 5 sec to several minutes).

4️⃣ CIRCULAR Mode

Hooter sounds periodically in cycles.

Example: 5 sec ON → 10 sec OFF → Repeat while condition exists. Cycle timing configurable via Wi-Fi UI

Battery backup 🔋 for Hooter if required, such that when system power is disconnected hooter remains ON

Connectivity with Sensor
  • Wired
  • Wireless (Wi-Fi, Bluetooth)
  • LoRa (Long Range Wireless)

Sensor Specifications

Power Input
  • Input Voltage: 5–12V DC
  • Protections: Short circuit, Reverse polarity
  • Cooling: Free air convection
  • Battery backup (HVDS-2412-HB, HVDS-2412-B)
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: 230V – 33kV AC and above.
  • Contactless Sensing Distance:
    • 33kV: Up to 15 meters
    • 25kV: Up to 10 meters
    • 11kV: Up to 5 meters
    • 230V: Up to 2 meters
  • Detection range adjustable : Configurable via built-in Wi-Fi UI.
Connectivity & Interface
  • Wired , Wi-Fi ,Bluetooth & LoRa(Long Range) connectivity.
  • Power Connector: Circular 4-pin Male-Female
Communication with External system
  • Capable of integrating with external system through Wi-Fi, Bluetooth, LoRa(Long Range), Wired.
Mechanical
  • Dimension : 100mm x 80mm x 50mm — 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
  • Battery Backup (HVDS-2412-HB, HVDS-2412-B)
Operating Conditions
  • Operating Temperature: −30°C to +70°C
  • Operating Altitude: Up to 5000 meters
Display
  • Type: LED display
  • Dual Side
  • Size: 24″ x 12″
  • Clear visibility upto 400 meters
  • Visual Indicators:
    🔴 RED – Voltage Present
    🟢 GREEN – Voltage Absent
    🟡 YELLOW – Sensor Fault
Connectivity & Interface
  • Power Connector: Circular 3-pin Male-Female
  • Sensor Connector: Circular 4-pin Male-Female
Communication with Sensor
  • Wi-Fi, Bluetooth, LoRa(Long Range), Wired
Mechanical
  • Dimension : 40″ x 18″ x 15″
  • Weight : 20kg
Other
  • Integrated Hooter : Hooter Modes for RED & YELLOW indication configurable via WiFi UI. Hooter Modes – > OFF, FOREVER, TIMED, CIRCULAR
  • Line Number & Status Tent Display – > Static or alternative timed text possible

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.
Enhanced Safety with Audible Alerts
  • Integrated hooter ensures immediate attention during voltage presence or system fault.
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—consequently, this is ideal for hard-to-reach or dangerous areas. Furthermore, the system enables easy 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 — as a result ideal for both indoor and outdoor setups.
Rugged, Industrial-Grade Build
  • High-quality enclosures (non-waterproof and IP65 waterproof) are available. In addition, the system includes secure circular connectors for both sensor and display units, ensuring reliability.
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. 

HVDS-2412 Models Comparison

HVDS-2412

HVDS-2412-H

HVDS-2412-B

HVDS-2412-HB

Rechargeable Battery Backup 🔋

❌
❌
✅
✅

Integrated Hooter for Safety 🔊

❌
✅
❌
✅

Hooter Modes & Timing Configuration

❌
✅
OFF / FOREVER / TIMED / CIRCULAR
❌
✅
OFF / FOREVER / TIMED / CIRCULAR

HVDS-1206 and HVDS-2412 comparison

HVDS-1206

HVDS-2412

Display Size

12″ x 6″
24” x 12” (Large Display)

Line No Display

❌
✅

Custom Text (POWER ON / OFF etc.)

❌
✅

Visibility Distance

Up to 200m

Up to 400m

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