9 Best Rated Christmas Light Testers 2023

LED LCD screen TV backlight problems are getting increasingly common. As we know, slight voltage change can have a big influence on TV function.

Excellent tool for diagnosing and locating bad LEDs in backlights.

With help of this tool, you can know the LED LCD screen backlight problem quickly.

Testing the backlight of LED at any size display the voltage, It can be tested in a long time, and will not damage the lamp beads.

Excellent tool for diagnosing and locating bad LEDs in backlights.

With help of this tool, you can know the LED light problem quickly.

It test in low-light, and will not damage your eyes.

2 Groups double-ended test leads set: alligator clips at both ends of each test lead; Each group end attaches 4 pieces alligator clips with 2 colors

Material: made of copper wire with PVC insulated sleeve and vinyl-covered alligator clips; Vinyl-covered alligator clips with strong spring and easy installation

Cable length: the test leads length is 1M/ 3.28 ft, can help you with proper distance work and give you more convenience

Safe and reliable: alligator clips securely to ensure good conduction; Red and black color coded leads allow you to test circuits without crossing wires or causing shorts

Wide applications: double-ended test leads with alligator clips as low voltage jumper leads can be applied in electrical or laboratory electric testing work; They are useful for connecting components to wires

[NON-CONTACT] With NCV inductive probe for AC voltage; Just place the tip near a terminal strip, outlet, or supply cord. When the tip glows red and the pen beeps, you know there's voltage present. The live wire detector can automatically detect the live or neutral wire. Ideal for breakpoint Test

【Broad Application & Multifunction】This non contact voltage tester can be used in circuit breakers, lighting fixtures, switches, sockets, wires and wherever needed. The electrical tester can also be used as an emergency flashlight to illuminate the work area. Handy outlet tester for electricians, homeowners, can automatically recognizes the voltage and displays it through LED indicator.

【Dual Model Voltage Tester】 Two detection ranges of low voltage and standard voltage (12-1000V AC / 48-1000V AC) make the measurement more flexible and accurate. Press the S button to adjust high/low sensitivity to better accommodate low ranges for thermostats, irrigation wires, doorbells, etc. The circuit tester is suitable for the most common wiring problems.

【Non-Contact】NCV induction probe with AC voltage, when the tip is close to an outlet or power cord, the voltage tester pen tip glows red and the alarm sounds, indicating the presence of voltage. The voltage detector automatically detects live or neutral wires and is ideal for breakpoint testing. Therefore, this electricity tester can be easily used by men and women of all ages.

【Safety Guarantee】Professional electric tester pen tool, passed CE CAT III600V RoHS testings; The voltage tester is also equipped with a customized pen sleeve, which can completely wrap the test pen, avoid scratches, and easy to store; The non-contact voltage detector measures voltage in a contactless manner, so you don't have to worry about being struck by electricity, super safe.

【Portable Compact Design】Pocket-sized electrical tester pen has a pen hook, allowing you to take it in your shirt pocket; The body of the ac voltage detector is made of ABS material, durable and resistant to fall; Bright flashlight for work in dim area; Automatic Power Off after 5 minutes standby to prolong the battery life. If you have any questions, please feel free to contact us.

All-in-One Multi Function Light Tester; Features make it easier to fix mini lights sets-- Perfect for the Professional and Homeowner Alike

Electrician approved

Trace wires- Safe for locating and measuring low and high amperage. Sensitivity Range.

Built-in flashlight- Neon lights make work easier

Indispensable tool- Absolutely essential for electrical, remodeling, and/or home improvement projects!

【Alarm Mode】The buzzer and indicator light will be triggered when voltage is detected. High-frequency beeps means high voltage and live wire are detected. Low-frequency beeps sound mean low voltage and null wire are detected.

【Measurable Voltage】Equipped with a sturdy metal NCV probe for testing AC voltage; the test probe touches the conductor with AC voltage, and the voltage reading will show on display.

【Multi-Function】Bright LED flashlight for work in dark areas; Automatic Power Off after 5 minutes without operation or signal detection; Pocket-sized, pen hook allows you to carry it in your shirt pocket.

【Special Function】Can be used as a screwdriver for your convenience while working.

【Safety Level】CE CAT.II300V RoHS Certificate, a high voltage alarm warns you of voltage over 20V, the screen turns red, and a loud audible alarm sounds. We provide a 36-Month after-sale service, Please feel free to contact us if you have any concern.

LightKeeper Pro fixes most incandescent light sets in seconds with the squeeze of the trigger

LightKeeper Pro's Quick Fix Method repairs the #1 cause of light set failure known as a Shunt Issue (internal bulb failure)

When the Quick Fix Method doesn't do the trick because the light set does not have a Shunt Issue, you can use the Audible Voltage Detector to locate the interruption in the circuit

Includes Bulb Tester, Fuse Tester, Bulb Puller, Storage Compartment for spare bulbs & fuses, 10 clear replacement bulbs (2.5V, 170mA)

Even includes Batteries (1.5 Volt Alkaline)

Great for Pre-Lit Trees, icicle light sets, net lights, wreaths, garland, and other pre-lit décor

Over 6 million LightKeeper Pros sold!

Does NOT work on LED lights

The LightKeeper Pro is not intended for LEDs, rope lights, or light sets with control boxes.

💎DUAL SENSITIVITY RANGE - High and low sensitivity adjustment to apply to different environments, power on the default low sensitivity mode (48v-1000v), short press the S button to enter the high sensitivity mode (12V-1000V). Note: Due to the high sensitivity of the probe, the presence of current in the vicinity of a meter will be recognized, this is a normal phenomenon

⛑SAFE AND RELIABLE&ACCURATE MEASUREMENT - Non-Contact test ,and the whole machine safety level-CE, CAT.III 1000V CAT.IV 600V, the body is made of high quality ABS, anti-drop insulation; Equipped with high performance sensor chip inside the body, intelligent sensing current

📡NON-CONTACT VOLTAGE TEST& BREAKPOINT TEST - When the NCV inductance probe is equipped close to the power outlet or live wire, the strength of the voltage can be judged according to the different high and low beeps of the test pen and the flashing frequency of the indicator. This function can be applied to breakpoint detection, which can help you quickly detect problems inside the line

🔦NULL/LIVE WIRE JUDGMENT & LED FLASHING LIGHT - It can automatically identify the Null/Live wire of the wires or socket to facilitate home wiring maintenance and enhance the protection of wiring safety measures. Test pen head equipped with a high light LED flash, convenient for testers to work in the dark environment

🔋AUTOMATIC SHUT-DOWN & LOW BATTERY INDICATOR - User-friendly design, no operation within 3 minutes do will automatically shut down, when the battery voltage is lower than 2.6v, it will sound 3 beeps to indicate the imminent undervoltage and shut down

🎁PORTABLE DESIGN&WHAT YOU GET - The whole machine is only about 47g /1.65oz（including the battery 13g/0.45oz), only equivalent to the weight of a pen, equipped with a pen clip, can be placed directly in your pocket. What you get: voltage test pen*1, AAA batteries*2, instruction manual*1, 36-month after-sales service *1