Klein Tools RT500
Klein Tools RT500 Receptacle Tester User Manual
Model: RT500 | Brand: Klein Tools
Introduction
The Klein Tools RT500 Receptacle Tester is a compact and durable device designed to quickly and accurately detect common wiring problems in standard 120V AC receptacles. It provides clear indications for correct wiring, open ground, reverse polarity, open hot, open neutral, and hot/ground reversed conditions. This manual provides essential information for the safe and effective use of your RT500 Receptacle Tester.
Safety Information
Always observe safety precautions when working with electrical circuits. This tester is designed for use with standard 120V AC receptacles only. Do not use on circuits exceeding this voltage. Always ensure the receptacle is de-energized before performing any work other than testing. This device is not designed to test the quality of ground, multiple hot wires, combinations of defects, or reversal of grounded and grounding conductors.
- Do not use if the tester appears damaged.
- Do not use in wet conditions.
- Always follow local electrical codes and safety practices.
- This tester is for diagnostic purposes only and should not replace proper electrical inspection by a qualified professional.
Product Features
- Push-pull design: Facilitates easy insertion and removal from receptacles.
- Slip-resistance ribbing: Provides a secure grip during use.
- Reinforced prongs: Enhances durability and longevity of the tester.
- Tests for correct wiring: Identifies common wiring faults.
- Large light indicators: Ensures clear and visible fault indications.
Components and Overview

Figure 1: Klein Tools RT500 Receptacle Tester. The image displays the orange body of the tester, the three metal prongs at the top for insertion into a receptacle, and the black label area with the "KLEIN TOOLS" logo. Below the logo, a diagram with two columns of circles (representing indicator lights) and corresponding text labels for various wiring conditions is visible. At the bottom, two clear light lenses are visible.
The RT500 Receptacle Tester features a robust orange casing with reinforced prongs for direct insertion into a standard 3-prong 120V receptacle. The front panel includes a clear indicator chart and two large LED indicator lights at the bottom, which illuminate in various patterns to show the wiring status.
Setup
The Klein Tools RT500 Receptacle Tester requires no setup. It is ready for immediate use out of the packaging. Simply ensure the tester is clean and free of any debris before insertion into a receptacle.
Operating Instructions
- Insert Tester: Firmly insert the RT500 Receptacle Tester into the 120V receptacle you wish to test. Ensure the prongs are fully seated.
- Observe Indicators: Once inserted, the two indicator lights on the tester will illuminate in a specific pattern. Refer to the chart below and on the tester itself to interpret the wiring condition.
- Remove Tester: After observing the light pattern, carefully pull the tester straight out of the receptacle.
Interpreting Indicator Lights
The RT500 uses two indicator lights to display the wiring status. The chart below explains the common patterns. Please note that the physical tester uses specific light colors (typically orange and red) and brightness to differentiate between certain conditions, which cannot be fully represented in this table.
| Condition | Left Light | Right Light |
|---|---|---|
| Correct Wiring | ON | ON |
| Open Ground | ON | OFF |
| Open Neutral | OFF | ON |
| Open Hot / Lamp Out / Open | OFF | OFF |
| Hot & Ground Reverse | ON | ON |
| Hot & Neutral Reverse | ON | ON |
| Hot on Neutral w/ Hot Open | OFF | ON |
Note: The specific color and brightness of the indicator lights on the physical RT500 tester are crucial for distinguishing between conditions like "Correct Wiring", "Hot & Ground Reverse", "Hot & Neutral Reverse", "Open Neutral", and "Hot on Neutral w/ Hot Open". Always refer to the legend printed directly on your Klein Tools RT500 Receptacle Tester for the most accurate interpretation.
Maintenance
- Cleaning: Wipe the tester with a dry, clean cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the tester in a dry environment, away from extreme temperatures and direct sunlight.
- Inspection: Periodically inspect the prongs for any signs of damage or wear. If damaged, discontinue use.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No lights illuminate when plugged in. | No power to the receptacle, or an open circuit (Lamp Out / Open). | Check the circuit breaker. Test a known working receptacle to confirm tester functionality. |
| Lights indicate a fault, but wiring appears correct. | Hidden wiring issue, or tester not fully seated. | Ensure the tester is fully inserted. Consult a qualified electrician for further diagnosis. |
| Tester feels loose in receptacle. | Worn receptacle contacts or damaged tester prongs. | If receptacle is worn, it should be replaced. If tester prongs are damaged, replace the tester. |
Specifications
| Attribute | Detail |
|---|---|
| Brand | Klein Tools |
| Model Number | RT500 |
| Power Source | Corded Electric (operates by plugging into receptacle) |
| Color | Black, Orange |
| Item Weight | 3.2 ounces (0.2 Pounds) |
| Dimensions (L x W x H) | 2.8 x 1.74 x 4.9 inches |
| Specification Met | UL |
| UPC | 092644694042, 701362824456, 012300291507, 696582436414 |
| Manufacturer | Klein Tools |
| Batteries Required | No |
Warranty Information
Specific warranty details for the Klein Tools RT500 Receptacle Tester are not provided in this manual. For comprehensive warranty information, please refer to the official Klein Tools website or contact their customer support directly. Typically, Klein Tools products come with a limited lifetime warranty against defects in material and workmanship.
Support and Contact
For technical support, product inquiries, or assistance with your Klein Tools RT500 Receptacle Tester, please visit the official Klein Tools website or contact their customer service department. Contact information can typically be found on their website or product packaging.
Website: www.kleintools.com
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