#2,473 in Tools & Home Improvement
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Reddit mentions of AstroAI Digital Multimeter, TRMS 6000 Counts Volt Meter Manual and Auto Ranging; Measures Voltage Tester, Current, Resistance, Continuity, Frequency; Tests Diodes, Transistors, Temperature
Sentiment score: 2
Reddit mentions: 4
We found 4 Reddit mentions of AstroAI Digital Multimeter, TRMS 6000 Counts Volt Meter Manual and Auto Ranging; Measures Voltage Tester, Current, Resistance, Continuity, Frequency; Tests Diodes, Transistors, Temperature. Here are the top ones.
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WIDE RANGE of tests for Voltage, Current, Resistance, Continuity, Capacitance, Frequency; Tests Diodes Transistors, Temperature.PROFESSIONAL LEVEL features include Auto-Ranging capability, and True RMS for measuring both AC Current and VoltageEASE OF USE: Convenient features like Data Hold, Large LCD Backlit Screen, Auto Shut-off and Hanging Magnet, and Kickstand make taking and recording measurements easier than ever beforeIDEAL FOR COMMERCIAL settings where it can handle the demands of a long workday, from the durable exterior to the wide range of heavy-duty capabilitiesBuilt-in F400mA/600V and F10A/600V explosion-proof ceramic fuse tubes; Double Protection, more secure and reliable; The fuses can protect the multimeter effectively; Overload protection on all ranges. 3 Year Warranty provided by AstroAI. Note: Please take off the cap before using the test leads.
Specs:
| Color | Red |
| Height | 6.692913379 Inches |
| Length | 8.661417314 Inches |
| Number of items | 1 |
| Width | 2.2834645646 Inches |
You are going to want a DMM to confirm. If you look at the relays, there is going to be a schematic on the side. I've attached an image. The rectangle with the diagonal through it is the coil. This is standard on relays. Once energized, it pulls in the relay, closing the contacts. With this setup, you can switch a higher power / voltage with a lower one. It allows automotive computers to switch stuff on and off. In this case, your coil pins are 85 and 86, and contact pins are 87 and 30. Don't mind the empty square. It is a flyback diode. No need to concern yourself with it.
Now, what you will want to do, is pull out the relay for the windshield wipers, find out which pins are the coil pins by examining the schematic on the relay, and then using a DMM with the black probe on COM, the red probe on V and set to ~10VDC (or if auto ranging, the straight line with the dotted line indicates your DC setting), and read across those pins on the distribution block that the relay plugs into.
If you read voltage there, something is keeping that relay energized, rather than the relay being the problem.
If you do NOT read a voltage there, read each side to the frame of the vehicle or the (-) battery post and see if you get a voltage. This is just to double check. Report back here.
Now, if you don't have a DMM, I suggest you get yourself one. Don't get one from the parts store. The cost is about as much as a relay. Get yourself one. They are a fantastic investment and so handy once you know how to use them. They will pay for themselves in no time. Personally, I own several. Some high quality, some mid tier and some low. Here are a few of my favorites:
Fluke 115 (around $150, but by far not necessary)
Fluke T-xx (not that great for automotive stuff. Amazing meter, but I would pick something else)
Klein CL700 (this one is around 100, has amp clamp for AC readings. I carry it at work and love it) (Home Depot)
Ideal clamp meters. I just love the look and feel of them. They do well. (get at Menards)
I've also had my eye on this one in the budget range:
https://www.amazon.com/gp/product/B071JL6LLL/ref=ox_sc_saved_title_5?smid=A2NOFZGOKNP3PJ&psc=1
If in doubt, hit up an electrical supply house and ask what meter they have in the 40-50 dollar range. They can point you to a budget meter that you can rely on.
https://www.12voltplanet.co.uk/user/Relay_with_resistor_across_coil.png
You could even get it on Amazon too - $32.39
Reviewers are saying it's really small (I think it looks like a headache to read) and one says the probes aren't standard size. If they're smaller I'd just buy something different for 120VAC home. Testing a computer power cord for an intermittent open circuit, for instance, could be made more difficult to do reliably with probes that are too short to fully plug into the computer side or too narrow to plug in solidly. The probes look unacceptably short for this without creating a work-around and adding an additional point of failure. Also, I like to free hands up whenever possible and still have the meter as close to where I'm taking measurements as I safely can. I don't see a stand or hanging holes.
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If you go with something different, just make sure the unit as well as the leads is rated for Cat.II minimum and at least the highest voltage you'll be reading. Here are a few options. My preference is the one with magnetic hanging strap:
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https://www.amazon.com/AstroAI-Multimeter-Resistance-Transistors-Temperature/dp/B071JL6LLL/ref=sr_1_3?ie=UTF8&qid=1549942139&sr=8-3&keywords=multimeter+true+rms
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This one has non-contact voltage indication:
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https://www.amazon.com/Ranging-Digital-Multimeter-Battery-Alligator/dp/B06ZZG2F2N/ref=sr_1_6?ie=UTF8&qid=1549942290&sr=8-6&keywords=multimeter+true+rms
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Was looking at this one https://www.amazon.com/dp/B071JL6LLL/ref=cm_sw_r_other_apa_zeC6Bb1DABX6N is this too cheap?