VoltHot Technologies

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Non Contact Insulated Telescopic Probe High Voltage Detector - Voltage Magnitude with Audio & Visual

  • Confirms the status of line whether "live or dead" or any induced voltage in electrical power system. This product can operate in both "contact" or "non contact (Proximity)" mode.
  • Determines approximate voltage magnitude of the line in order to take decision whether the line voltage is as per system voltage or induced voltage (line dead) or voltage drop due to over loading.
  • The non contact insulated telescopic probe at voltage sensing position can be used on LT lines & HT lines up to 33kV and the detector is at handle position.
Technical specifications
Model name VoltHot_NCT_VD_VM_AV_Series
Functionalities AC voltage detection by noncontact (Proximity)
Detection voltage levels 100V to 20kV (P-G)
Functional modes

230V (P-G)

11kV (P-P)

33kV (P-P)

Self test

Applications OH HV lines, URD HV lines & capacitive points, HV switchyards and low voltage systems.
(Line live or OFF or induced – voltage status check)


+/-30% on voltage (Non Contact)

Electric Field Technology sensor system .

Threshold voltage setting.

Voltage hold (Digital) Displayed voltage is hold for 2 minutes.
Test before touch functionality Self test diagnosis and Test before touch source
Detector response time < 1 second
Operating frequency 40Hz to 65Hz
Battery voltage 9V (Duracell)
Low battery indication < 6V
Battery Life Minimum 120 hours of continuous use.
Detection indication Voltage magnitude display – APM and DPM respectively. LED intermittent & Buzzer audible displays.

Insulated telescopic probe length 15 feet 

Overall diameter 110mm * length 100mm (Plastic housing for PCB).

(3 feet length insulated handle to be put on to detector)


(excluding hot stick)

Approx.  2.5kg (including insulated telescopic probe)
Product standard IEC 61243-1
Operating temperature -100C to +600C
Storage temperature -200C to +600C
Humidity 25% RH to 96% RH
Water resistant Yes
Reliability (warranty) 3000 hours operations
Service support & calibration Yes

Caution: The limit mark indicates that the probe shall not touch the HV line beyond this in case for the high voltage level above 5kV for better safety of operator.


  • Prototype concept development test is under progress
  • Innovation disclosure filing for India Patent is under process
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