does this work on Christmas lights

Yes, that is what I bought it for.

my tester quit after using for three days changed batteries the flashlight comes on and wont go off tester wil not work

Thank you very much for your feedback on using the DB03 product. Your information is very important to us. If you encounter the fault you mentioned, you can try the following operations: 1. Check whether the safety key is stuck and whether other safety key functions can work normally; 2. Check whether the battery size is too large, which may cause internal structure deformation; 3. After confirming the above two points, you can try to turn off and restart the device.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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ZT-DB03 Voltage Tester with Ambient Temperature Display, Non-Contact Voltage Tester, Multi-Range Test Pen, Live/Null line Tester, Electric Tester with Flashlight, Break-Point Detector.

ZT-DB03 Voltage Tester with Ambient Temperature Display, Non-Contact Voltage Tester, Multi-Range Test Pen, Live/Null line Tester, Electric Tester with Flashlight, Break-Point Detector.

Product ID: 593730287

Details

Brand
ZOTEK
Power Source
Battery
Style
Compact
Colour
Red
Item dimensions L x W x H
15.6 x 2.3 x

⚡Non-contact AC voltage detection up to 1000V

🔋Long-lasting with 2x AAA batteries & auto sleep

🔦Built-in LED flashlight for low-light work

Description

⚡ Stay Shock-Savvy: Test Smarter, Work Safer!

SMART AUTO SLEEP MODE - Saves battery life by powering down after 15 minutes of inactivity—ready when you are, always.
NON CONTACT SAFETY FIRST - Detect live wires without touching—flash and beep alerts keep you safe and confident on every job.
COMPACT CLIP READY DESIGN - Fits snugly in your pocket or tool kit, making it the go-to tester for electricians and DIY pros on the move.
CE CERTIFIED FOR INDUSTRIAL USE - Meets CAT II 1000V safety standards, trusted for professional and home electrical testing.
PRECISION DUAL RANGE VOLTAGE DETECTION - Switch effortlessly between 12V-1000V and 48V-1000V for pinpoint accuracy in any electrical environment.

The ZT-DB03 Voltage Tester is a compact, non-contact AC voltage detector with dual-range measurement (12V-1000V and 48V-1000V), designed for electricians and homeowners. Featuring audible and visual alerts, an integrated LED flashlight, and an energy-saving auto sleep mode, it ensures safe, precise, and convenient electrical testing. CE CAT II 1000V certified, it’s ideal for detecting live wires, breakpoints, and low-voltage circuits in various environments.

Specifications

ASIN	B0BCK169W9
Best Sellers Rank	#12,096 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #197 in Voltage Testers
Brand	ZOTEK
Brand Name	ZOTEK
Colour	Red
Country of Origin	China
Customer Reviews	4.2 out of 5 stars 113 Reviews
Included Components	Non-Contact Test Pen User Manual
Item Dimensions	15.6 x 2.3 x 2.8 Centimeters
Item dimensions L x W x H	15.6 x 2.3 x 2.8 Centimeters
Manufacturer	ZOYI
Maximum Operating Voltage	1000 Volts
Measurement Type	Voltage Tester
Min. Operating Voltage	12 Volts
Minimum Operating Voltage	12 Volts
Model Number	ZT-DB03
Number of Items	1
Number of Packs	1
Part Number	ZT-DB02
Power Source	Battery Powered
Power Source Type	Battery Powered
Specification Met	CE
Style	Compact
Style Name	Compact
UPC	787309234625

Reviews

T**E

No temperature display and voltage display only low and high light

Product showing different things and not available display temperature and voltage

22.08.2026

W**L

Good so far.

Works for what I got it for.

26.08.2026

M**.

Customer Service

Customer service at Zoyi & Zotec Official Flagship Store is excellent. I recently purchased this Voltage Pen and either mis-ordered or received the wrong product. The company quickly addressed the issue professionally and honorably to my satisfaction. Regarding the product itself, it works and is of good value for the dollar.

10.07.2026

A**L

Good product

Good product, except the fact it's sensitivity needs adjustment. They should show what sensitivity for what voltage rather than leave you to guess.

10.07.2024

B**.

Pooe Sound

Sounss is too weak for work. Can barely hear it.

30.07.2023

G**K

Works ok

Sound a bit on the low side And thermostat looks a bit off

6.01.2024

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TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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2 weeks ago

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₨350

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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TrustScore 4.5 | 7,300+ reviews

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Very impressed with the quality and fast delivery. Will shop here again.

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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