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⚡ Diagnose with confidence, work with pride.
The Klein Tools RT110 Outlet Tester is a professional-grade device engineered to detect common wiring faults in North American 110/125V AC outlets. Featuring a clear light sequence for easy interpretation, UL and CSA certifications for safety, and rugged durability with a 6.6-foot drop resistance, it’s built to perform reliably across a wide temperature range. Trusted by electricians and managers alike, it streamlines outlet testing to keep your projects on track and up to code.












| ASIN | B01AKX3AYE |
| Best Sellers Rank | #4,808 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #8 in Circuit Testers |
| Brand | KLEIN TOOLS |
| Brand Name | KLEIN TOOLS |
| Color | Factory |
| Customer Reviews | 4.8 out of 5 stars 3,584 Reviews |
| Global Trade Identification Number | 00092644690266 |
| Included Components | Receptacle Tester |
| Item Dimensions | 5.5 x 3.5 x 1.8 inches |
| Item Type Name | Klein Tools Receptacle Tester RT110 |
| Item dimensions L x W x H | 5.5 x 3.5 x 1.8 inches |
| Lower Temperature Rating | 32 °F |
| Manufacturer | Klein Tools |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 110 volts |
| Model | RT110 |
| Number of Items | 1 |
| Part Number | RT110 |
| Power Source | Hand Powered |
| Specification Met | CSA |
| Style | Standard |
| Style Name | Standard |
| UPC | 092644690266 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 140 °C |
| Warranty Description | See Manufacturer Website |
J**.
Good, simple tester.
This is a simple outlet tester which you put into the outlet and get a reading. It gives a readout which lists the problem. With this information one can fix something simple or find an electrician if it is more complicated.
D**T
Very good.
Quick and easy. Everything you need to know and it works on tamper proof outlets.
M**S
Welding
Good Quality and value
G**.
Handy Little Tool
Nice accessory for your toolbox to have on hand. You never know when you will need to check the electrical circuitry in your house.
D**A
Outlet assessment tool to fix non working outlets
This tool plugs into a three pronged outlet to check if it is wired correctly. If it is not it will tell you what is wrong so it can be fixed. If it is correct it will tell you that also. It has lights that go on that tell you what is wrong and a light key that gives you details printed on the plug itself.
E**L
Simple and easy to use
It works exactly how it should and I use this so when I am charging my electric car I can confirm that if the outlets are going to be an issue for me when my car charger throws errors I know what the issue actually is for.
J**A
Good for checking the polarity.
Good for check wires at home
D**D
Good product!
it is a product that very easy to be used without special training.
W**R
Does what it says. Simple, efficient
Does what it says. Simple, efficient
D**K
Simple
It works. Simple and easy.
C**Z
Muy buen producto y marca.
Muy buen producto, me ha ayudado mucho a instalaciones eléctricas para hacer comprobaciones rápidas. Lo recomiendo mucho sin problemas, posiblemente lo único malo es que las instrucciones no están en español solo ingles, no tengo problemas para leerlo pero seria bueno tenerlo en español de igual manera.
T**.
Si lo recomiendo
Muy practico
B**E
Worth it.
Great little tool that helped me figure out grounding issues with one of my Bluetti battery packs so I could get it to run my furnace.
Trustpilot
4 days ago
2 months ago