SPERRYInstruments DSA540A 6 Function Digital Snap-Around Clamp Meter, Clamp-On AC / DC Voltage, 400 AMP Meter, AC / DC Current Reading, Reads Panel & Outlet Voltage, Includes Carrying Case, Black & Yellow

This is great for using on a boat because it reads DC voltage and amps. I have two of them and never had a problem. There are some bad reviews about erratic voltage readings but those are milivolts and only show up when there isn’t voltage.

Good tester.

easy to use

I have this meter for 5-6 yrs now still going strong any 1 who thinks it copped out u must have gotten a bad apple of the bunch. mine is not true r-m-s like it says on meter. but all in all it reads really good 4 me and works well battery has not failed me yet. I saw this be 4 I new about amazon my favorite online place at least 1 of them. I got mine from menards 4 $59.99 with case and it is my fave of ac/dc volt and amp meters 4 an inexpensive 1 If u treat this meter right then it works but if it came ad works defective take it back and get another or a refund. It is not a bad tool 4 this or price I paid 4 it. 4 the not so wallet or pocket breaker get this and try 1 if u think u had a bad one or 1 that failed ask 4 a replacement or a refund

Reading voltage when it's not connected to anything is bad enough, and I thought I would just have to get used to constant changing numbers instead of a blank screen or zero's, but then when used on a job it reported voltage where there was none. Luckily I had my old tester with me or I might have spent hours trying to figure out where the voltage was coming from. Sent it back. Maybe it was just defective.

AC and DC ranges do not zero ! There is no adjustment.Worse yet, the false readings wander erratically.This meter is too unreliable for any serious user.

hi iam vince from Australia I haven't used this clamp meter before but I used a sperry vc61000 voltage continuity tester and I think it is execellent quality it works fine on all scales but I wish it have comed in a carry case what do other customersthink about this unit with thanks vince

I bought it a couple years ago to test amp draws on household appliances, only that reason. I used it only on 15/20 circuits, and after a couple months of use, i started getting the “oL” reading. the "overload" reading. Talked to some Sperry guys, who suggested i overloaded it. I don’t get near enough power to overload it, i’m not electrically certified and don't getting near anything over 20 amps. If there is no replaceable fuse on this item, it pretty much became my expensive test light. Poor design on someone’s part, or designed to sell more replacement units after this happens. They told me i could send it to them and pay decent bucks to repair it, but i'd think it'd happen again. Personally, I wont be buying another sperry.