Amprobe ST-102B Socket Tester with Ground Fault Circuit Interrupter (GFCI)

FrankyMoney: It comes in a nice little case but that's about it , not accurate at all. Disappointing by amprobe they use to make way better products than that

Canada on Feb 18, 2023

Amazon Customer: It's a pain when you open a breaker box and face 40 unlabelled breakers. This device plugs in the outlet and you pass the hand-held unit over the breakers and it will identify the one that controls the circuit in question. It works best if you touch it to the breaker right over the switch. Accuracy was 100%. It will also identify the circuit in a bundle. Just touch it to the ROMEX shielding of each line. However. the build quality is cheap. A sloppy "on-off-test" button has the thing beeping from the moment you pick it up. You must hold the button down to shut it off. So I probably wouldn't drop it in the bottom of my tool bag, either. Otherwise, the operation is flawless,

United States on Oct 14, 2022

juan alonso: I recommend

Canada on Jun 01, 2022

Kim Madsen: No comment

Canada on Mar 25, 2022

Amazon Customer: Besides the very sensitive on button this circuit finder had worked perfectly for me every time. If the on button was redesigned this device would be perfect, still I'm very happy with it.

Canada on Feb 26, 2022

SJK: I have both the Amprobe BT-250 and BT-120 circuit breaker tracers and use them all the time at work. They are physically identical and operate exactly the same. The main difference is that the BT-120 is rated for use on circuits up to 120V [50-60Hz] and the BT-250 is rated for circuits up to 250V [40 -70Hz]. The BT-120 includes the transmitter and the receiver with a 9V battery installed, but nothing else. It may be hard to tell from the product description, but the BT-250 actually comes as a kit that includes a nice foam padded hard case, test cord with alligator clips, light socket adapter and a 9V battery installed in the receiver. The transmitters on both models are powered by line-voltage from the circuit under test. Both tracers seem to work equally well at locating circuit breakers for me probably 99-percent of the time. There are some odd circumstances though where the receivers can’t locate a circuit breaker accurately. I’m not sure exactly why this happened, but for me at least, it is only a rare occurrence. Overall tough, I'm happy with how these perform and would definitely purchase again.

United States on Dec 29, 2020

Amazon Customer: This is the second outlet tester I had bought during my time as an electrician and I went with Amprobe because they make some great products albeit at a higher price. It worked fine right out of the box and felt was built well, until months later. I had used another brand of outlet tester before and only bought this after I had lost the other tester. I wanted to see if this was better than my old Sperry, and it let me down in respect to build quality as far as I know. I am not super rough with these but after a few times wiggling this thing back and forth out of tight outlets one of the lights started to flicker and now I have to adjust the device in the outlet until the other light works. This can be annoying when testing many outlets as you might not be sure it's the outlet or the tester that's faulty. It was pretty disappointing since I had only used it for around half a year. Is this a deal breaker, not entirely as it could have just been my being rough with it or just a manufacturing defect. I would purchase again if it was at the same price as other testers as it's a nice looking and functioning tester.

Canada on Apr 04, 2020

MeNahBangWahComeHeah: I bought two of these small, lightweight Amprobe ST-102B Socket outlet testers to mail to my siblings to test their regular electrical outlets and their GFCI electrical outlets.
I tested both of the units that I purchased with my home's GFCI electrical outlets and non-GFCI outlets, and both testers work as designed.
The GFCI outlets, (also known as GFI's), are the electrical outlets that are designed to trip, or turn off, instantly, whenever it senses electrical current passing from hot to ground. These type of outlets are required by the National Electrical Code for almost all electrical outlets that are within 6 feet from any water source, and all outside outlets. (Sometimes the normal electrical outlet is protected by a GFCI circuit breaker inside your electrical panel) The GFCI electrical outlets and GFI circuit breakers help prevent deaths from electrocution. This device is a TESTER, which is used to quickly inform you if the electrical outlet in your house is wired correctly and also to ensure that your GFCI trips when you push the little black button in the center of this tester. You must then RESET the GFCI circuit breaker (if you have one), or press the RESET the...

United States on Feb 03, 2016

Bob Baust: This circuit breaker tracer works perfectly but you MUST follow the instructions. The unique auto-calibration system ensures that the correct breaker is identified every time without any false indications.

Most devices like this suffer from problems with "false positives", meaning they beep at more than one circuit breaker and it's difficult to tell which one is actually powering the circuit you are working on. These false positives occur because the transmitter signal can be induced into other wires if they run parallel to the circuit under test. This occurs frequently in homes and businesses because all the wires must eventually go back to the breaker panel and many follow the same path to get there.

This device uses a 2-step identification process to eliminate those false positives. When powered up, the device starts out at a high sensitivity level, meaning it will detect the transmitter signal even if it's weak from a far-away transmitter or caused by an "induced" signal. After the transmitter is plugged into the powered outlet, you slowly scan ALL the circuit breakers with the device to set the calibration level, disregarding any beeps. Each time the device...

United States on Feb 26, 2015