SmartVolt™ · AAA cells · Dual ToneSmartVolt™ Dual Tone (AAA cells)

Name: Jarsh SmartVolt™ Dual Tone (AAA cells)
Brand: Jarsh
SKU: JSV-DTC

JSV-DTC

No charging, ever. Swap AAA cells and keep working for up to 150 hours per set. SmartVolt warns a worker the moment they come within range of a live AC conductor, from 220 V up to 66 kV, without contact.

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SmartVolt™ Dual Tone (AAA cells) non-contact voltage detector, grey top, black base

220 V – 66 kVAC detection range

2.5 mAlarm distance at 66 kV

70 gWeight

150 hPer set of AAA cells

IP55Ingress protection

SmartPause™Auto re-arm

Overview

A wearable early warning for every live line

SmartVolt worn by a lineman at work — SmartVolt in the field

Why crews wear it

Most electrical contact incidents happen to people who believed a line was dead, or who did not notice one nearby. SmartVolt gives them a second sense: a loud, visible warning before their hands get there.

Detects live AC from 220 V to 66 kV without contact
Alarm: sound (buzzer) and light (red led)
SmartPause™ silences the alarm in a known live zone, then re-arms itself
70 g, 62 × 60 × 35 mm
Up to 150 hours (varies with use), on swappable AAA cells
Helmet, wrist and PPE mounting
IP55: dust and water jets from any direction

How it works

Switch on, test, clip on, get warned.

Switch on

Press the red button on top. The three LEDs show battery level, and the green and red LEDs underneath light up to confirm the alarms work.

Test at a socket

Hold it near a live 220 V socket before every shift. It should beep and flash red. That proves it is detecting.

Mount it

Clip it to the helmet, wrist or PPE using the supplied mounts. The green LED blinks every 5 seconds to show it is on watch.

Work. It warns.

Come within range of a live AC field and it beeps with a red LED alert, before you can reach the conductor.

SmartPause™. When a worker deliberately enters a known danger zone, one press silences the alarm. SmartVolt re-arms itself automatically once they move out of the field, and can also be re-armed by hand. No one has to remember to switch it back on.

Detection

Alarm distance grows with voltage

Detection distance by AC voltage

Detection distance by AC voltage
AC voltage	Distance (m)
220 V	0.15
1 kV	1.1
6.6 kV	1.7
11 kV	1.9
33 kV	2.2
66 kV	2.5

Distances at which the alarm triggers, per the SmartVolt technical data sheets. Treat them as typical values. The actual distance depends on conductor geometry and surroundings.

Room to stop

At 11 kV the alarm sounds at about 1.9 m; at 66 kV, about 2.5 m. That is far enough to stop, step back and check.

An early warning, not a permit to work. Non-contact detection tells a worker that a live field is near. It does not prove a conductor is dead. Keep isolating, testing with an approved contact tester and earthing before any work on a line, exactly as your safety rules require.

Features

Everything it does, and nothing that gets in the way

Non-contact detection

Senses the electric field around live AC conductors from 220 V to 66 kV.

220 V – 66 kV AC

Alarm you notice

Audible buzzer together with a red LED alert.

Sound (buzzer) and light (red LED)

SmartPause™

Silence the alarm while deliberately working in a known live zone. It re-arms automatically on exit, or by hand.

Auto re-arm

Always-on indicator

Green LED blinks every 5 seconds so the worker and supervisor can see it is armed.

Blink every 5 s

Battery warnings

Three-level battery indicator. The red LED blinks at 20 %; it beeps below 5 %.

3-level indicator

Swappable AAA cells

No charger, no downtime: unscrew the base and change the cells. Up to 150 hours (varies with use).

150 h

In the box

Ready to wear out of the box

SmartVolt Dual Tone with its side mount, peak mount and wrist band

01
SmartVolt™ with AAA cells fitted
02
Side mountJSV-A-SM
03
Wrist bandJSV-A-WB
04
Peak mountJSV-A-PM
05
Ejection pinJSV-A-EP
06
User manual with warranty

Box contents per the product data sheet.

Technical data

Specifications

SmartVolt™ Dual Tone (AAA cells)JSV-DTC

Detection

Type: Non-contact, AC voltage
Range: 220 V – 66 kV AC
Distance: 220 V 0.15 m · 1 kV 1.1 m · 6.6 kV 1.7 m · 11 kV 1.9 m · 33 kV 2.2 m · 66 kV 2.5 m
Alerts: Sound (buzzer) and light (red LED)
SmartPause™: Temporary silence; automatic or manual re-arm
Status indication: Green LED blinks every 5 s when on

Physical

Dimensions: 62 × 60 × 35 mm
Weight: 70 g
Material: Industrial ABS plastic
Housing finish: Dual Tone (grey top, black base)

Power

Power source: Swappable AAA cells, 3 V (non-rechargeable)
Runtime: Up to 150 hours (varies with use)
Low battery: Red LED blinks below 20 %; beeps below 5 %

Environment

Operating temperature: 10 °C to 50 °C
Storage temperature: −20 °C to 60 °C
Ingress protection: IP55: protected against dust and water jets from any direction; do not submerge

Compliance

Tested and certified by: National Test House (NTH), Kolkata; ERDA

Mounting

Options: Helmet, wrist, PPE

Specifications per Jarsh TDS JSV-DTC V0.2 · 09.2025.

Compare

How it compares with other SmartVolt models

All SmartVolt models →

	JSVR-DTRechargeable v2.0	JSV-DTCDual Tone · AAA	JSV-MTCMono Tone · AAA
Detection
AC voltage range	220 V – 66 kV	220 V – 66 kV	220 V – 66 kV
Alarm distance at 66 kV	2.5 m	2.5 m	2.5 m
Alerts	Sound (buzzer) and light (red LED)	Sound (buzzer) and light (red LED)	Sound (buzzer) and light (red LED)
SmartPause™ auto re-arm
Power
Power source	600 mAh rechargeable	AAA cells, swappable	AAA cells, swappable
Runtime (varies with use)	200 h	150 h	150 h
Charge time	1 hour	No charging	No charging
Build
Weight	50 g	70 g	70 g
Dimensions	61 × 48.9 × 32.15 mm	62 × 60 × 35 mm	62 × 60 × 35 mm
Ingress protection	IP55	IP55	IP55
Housing	Dual Tone	Dual Tone	Mono Tone
Tested and certified by	—	NTH Kolkata · ERDA	NTH Kolkata · ERDA
	View →	View →	View →

Use and care

Safe use, every shift

Before and during work

Switch on and confirm the green and red LEDs light
Test near a live 220 V socket before use
Mount securely on helmet, wrist or PPE so it cannot detach
Use SmartPause™ with care, and make sure it has re-armed after leaving a live zone

Looking after it

Check the battery level regularly; replace the cells when the red LED blinks
Unscrew the base to change the AAA cells
Protected against dust and water jets where IP55-rated; never submerge
Operate between 10 °C and 50 °C

Proof from the field

Chosen over the incumbent after a 45‑day trial

“The SmartVolt fundamentally changed how our Electrical Maintenance Engineer teams approach preliminary checks. We no longer had to risk contact or rely on complicated procedures for a simple ‘live or dead’ confirmation.”

Network Maintenance Engineer, leading Indian internet service provider, Hyderabad

5,000+Field workforce at a leading ISP laying cable on utility poles

45 daysReal-world evaluation against the incumbent detector

Outperformedon accuracy, durability, responsiveness and ease of use

Read the case study →

FAQ

Common questions

Can't find what you need? Call +91 8340 84 84 84 or write to info@jarshsafety.com.

What voltage does SmartVolt detect?

AC voltage from 220 V up to 66 kV, without contact. The higher the voltage, the earlier it warns: about 0.15 m from a 220 V source and about 2.5 m from a 66 kV line.

Does SmartVolt detect DC?

No. SmartVolt is specified for AC voltage only.

Is SmartVolt a replacement for a contact voltage tester or earthing?

No. It is a wearable early warning that a live field is near. Keep following isolation, contact-testing and earthing procedures before work on any line.

What is the difference between Mono Tone and Dual Tone?

The housing finish. Mono Tone is all grey; Dual Tone has a grey top and a black base. Detection range, distances and alarms are identical.

What does SmartPause™ do?

It lets a worker silence the alarm while deliberately working in a known live zone. The device re-arms automatically once they leave the field, or can be re-armed by pressing the button.

How long do the cells last?

Up to 150 hours (varies with use). The red LED starts blinking at 20 % battery, and it beeps below 5 %. Unscrew the base to change the cells.

How do I know it is working?

On switch-on, the green and red LEDs underneath light up. In use, the green LED blinks every 5 seconds. Test it near a live 220 V socket before each shift. It should beep and flash red.

Can it be used in the rain?

All three SmartVolt models are rated IP55: protected against dust and against water jets from any direction. Do not submerge them in water.

What temperature range does it work in?

Operating 10 °C to 50 °C; storage −20 °C to 60 °C.

Where can it be worn?

On the helmet, the wrist or the PPE, using the clips and wrist band supplied. Mount it securely so it cannot detach.

Do you supply in bulk and through dealers?

Yes. For volume pricing, utility and contractor programmes, or to become a SmartVolt dealer, contact our team.

Get SmartVolt™ Dual Tone (AAA cells) for your crews.

Tell us how many workers need cover and where they work. We'll quote, arrange a demo and advise on mounting.

Request a quote

+91 8340 84 84 84Call our team, Mon–Sat 10:00–18:30 IST

info@jarshsafety.comRequest a quote or bulk pricing

Become a dealerDistributor and channel-partner enquiries

SmartVolt™ · AAA cells · Dual ToneSmartVolt™ Dual Tone (AAA cells)