NOYAFA NF-816 Underground Cable Wire Locator Tracker Network Cable Tester Wire Measuring Instrument
Key features
- •Helpful-locating & tracking buried and hidden wires and other hidden-wires. Only for wires & cables, not for sprinkler valves
- •Easily locate pet fence wires, metals wires, metals pipes, electrical wires, ect
- •Locate-Determining Which Receptacles are on specific circuits，track-Pinpointing Drill Sites before drilling
- •Wire tracer range-up to 2 feet deep and 1000 feet in length
- •WARNING: Do not use on live circuits to avoid damaging the Tester! This device is ONLY to locate non-energized Cable
- •WARNING: Only for single-core or double-core wire, NOT FOR multi-core wire and bundled wires.
NOYAFA NF-816 Underground Cable Wire Locator Tracker Network Cable Tester Wire Measuring Instrument
List Price: $82.86$74.57DEALYou Save: $8.29 (10%)
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Customer Reviews
Reviews sourced from verified Amazon purchasers4.0
out of 5
Based on 2 reviews
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Four Stars
Amazon Customer•November 19, 2016
Worked best using the head phones. Found the under ground wire in two minutes which was 10 inches down
NICE UNIT BUT YOU NEED TO LEARN HOW TO USE IT
HR•September 8, 2015
This instrument works pretty well, but using it takes some experimentation. I suspect some of the negative comments in the reviews of the nf 816 products (they all use the same transmitter and receiver) are written by people who didn't experiment enough to get a good result. Here's what I learned:
1. The unit is not flimsy, but it is an instrument - not a tool which can be thrown in a toolbox together with the pipe wrenches and shovels.
2. There are several ways to hook it up - and most of them make no difference! See below.
3. The instruction booklet which comes with it is a poor translation from Chinese. Strangely, the front cover of the booklet gives the model number (nf-816) but does not tell who the manufacturer is. In fact it is NOFAYA; guess that must be where the nf comes from in the model number.
4. The transmitter has a thumb wheel which is marked like a gain control - but in my experiments it made no difference whether this was high or low. Perhaps if I were using it on 1000 ft. of wire it might make a difference, but for me, working with 30 ft., the unit worked the same at any setting of this thumb wheel.
5. The receiver also has a thumb wheel for gain, and this is extremely effective. You can dial it up 'till it nearly deafens you, or down until there's no sound at all. As you move down the wire line, or if the wire depth varies, you'll be using that adjustment all the time.
6. Grounding the transmitter. There are several choices, and for me they all worked about the same. Let's say you are looking for a 2-conductor cable with ground: Disconnect it from its normal power. Then hook the red transmitter wire to the "hot" wire leading underground. Hook the black transmitter wire to a) the second wire in the underground cable, or b) to the ground wire, or c) to a screwdriver pushed into the earth, or d) to NOTHING! Just let the black wire and alligator clip dangle in the air! For me any of these choices worked fine.
7. The instruction booklet says that after you have energized the underground wire with the transmitter, and turned on the receiver (with ear buds if you bought that option) you can let the black pickup dangle over the ground, and as you approach the buried wire you'll get a gradual increase in the tone, and then, when you are right over the wire, you'll get a null - i.e. the sound will stop. Moving on to the other side of the wire the tone will start again. What you're looking for is the null. The sounds you hear as you move around are not simply silent-tone-null-tone-silent. You'll likely think the loudest sound is right over the wire. NOT SO. You must look for the null.
It's a nice little unit if you treat it well, and learn to use it!
Hank
Worcester MA
1. The unit is not flimsy, but it is an instrument - not a tool which can be thrown in a toolbox together with the pipe wrenches and shovels.
2. There are several ways to hook it up - and most of them make no difference! See below.
3. The instruction booklet which comes with it is a poor translation from Chinese. Strangely, the front cover of the booklet gives the model number (nf-816) but does not tell who the manufacturer is. In fact it is NOFAYA; guess that must be where the nf comes from in the model number.
4. The transmitter has a thumb wheel which is marked like a gain control - but in my experiments it made no difference whether this was high or low. Perhaps if I were using it on 1000 ft. of wire it might make a difference, but for me, working with 30 ft., the unit worked the same at any setting of this thumb wheel.
5. The receiver also has a thumb wheel for gain, and this is extremely effective. You can dial it up 'till it nearly deafens you, or down until there's no sound at all. As you move down the wire line, or if the wire depth varies, you'll be using that adjustment all the time.
6. Grounding the transmitter. There are several choices, and for me they all worked about the same. Let's say you are looking for a 2-conductor cable with ground: Disconnect it from its normal power. Then hook the red transmitter wire to the "hot" wire leading underground. Hook the black transmitter wire to a) the second wire in the underground cable, or b) to the ground wire, or c) to a screwdriver pushed into the earth, or d) to NOTHING! Just let the black wire and alligator clip dangle in the air! For me any of these choices worked fine.
7. The instruction booklet says that after you have energized the underground wire with the transmitter, and turned on the receiver (with ear buds if you bought that option) you can let the black pickup dangle over the ground, and as you approach the buried wire you'll get a gradual increase in the tone, and then, when you are right over the wire, you'll get a null - i.e. the sound will stop. Moving on to the other side of the wire the tone will start again. What you're looking for is the null. The sounds you hear as you move around are not simply silent-tone-null-tone-silent. You'll likely think the loudest sound is right over the wire. NOT SO. You must look for the null.
It's a nice little unit if you treat it well, and learn to use it!
Hank
Worcester MA
