Cal Test Electronics CT2700 High Voltage Digital Multimeter Probe, 40 kV / 28 kV Voltage
Key features
- •Divider ratio: 1000:1
- •40kV/28kV AC peak
- •Accuracy +/-1 percent to 20kV DC
- •Meets IEC 61010-1 CATI
- •Input impedance: 1000
BrandCal Test Electronics
CategoryVoltage Testers
Cal Test Electronics CT2700 High Voltage Digital Multimeter Probe, 40 kV / 28 kV Voltage
List Price: $140.39$126.35DEALYou Save: $14.04 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 22, 2026In Stock (3)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
Customer Reviews
Reviews sourced from verified Amazon purchasers4.7
out of 5
Based on 5 reviews
5★
80%
4★
20%
3★
0%
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1★
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Dougdunedin
Doug•July 31, 2016
Worked...I didn't get killed..
... exactly what you need it to do at a great price point
Ivo I Rivetta•February 19, 2016
Does exactly what you need it to do at a great price point
Great HV Probe, Good Value, Good Quality!
SilverCore Labs•August 4, 2014
If your looking for a good quality HV probe then look no further. I was quite surprised when I received this in the post. It's built very well and measures DC to 40kV and AC to 28kV (RMS). The divider is 1000:1 so make sure you measure your meter's input impedance to get an accurate result. The spec calls for no less than 10M, Most of my DMM's are at 11M and I tested the HV probe on a precision 1.5kV DC supply and 500V gave me a reading of .5V and 1kV a reading of 1V. It appears the probe is calibrated for typical 11M input impedance meters. Inside the probe on the low voltage side, there is a small PCB with a precision potentiometer. It looks like you could re-cal the probe for a 10M input impedance if you had to, but I am not 100% sure of this. The DMM insertion leads have a retractable cover which reveals 4mm banana jacks. The cables themselves feel like a good quality silicon rubber which are rated at 6kV up to 150C made by Great Yueh Electric Wire & Cable, Part#: E173476, After some final testing, I have concluded that the probes accuracy is spot on. This is well worth the price and I would highly recommend it!
high voltage probe
Ken Goodhew•February 1, 2014
a good quality high voltage probe that cost considerably less than some of the "name" brands, as well as measuring up to 40kv.
Use a decent multimeter
-•December 29, 1969
Worked with my $36 Extech MN36. I needed to set the voltage on a Geiger counter, anywhere from 400vDC-1400vDC. For a certain scintillator I needed 900vDC. I plugged this in and set my meter to "V" and it read 0.900v which is awesome!
Hold it by the (black) handle part and never touch the red part when measuring.
Most digital multimeters have an input impedance of 10M or 11M ohms. I have a bunch of $2 Harbor Freight multimeters (which actually have some really nice features the Extech doesn't have) and they go to to 1000vDC on their own, the readings were 478vDC with probe and 68 using the stock probes, LOL.
I've got other, higher voltage projects coming, but I like using this as added protection when I'm close to the upper range of my multimeters (900v-1000v)
My dad has 3 Fluke multimeters and he seemed impressed with this probe.
The spring loaded plugs are really, really nice. All the wiring feels like it's coated nice rubber and not cheap plastic (Huan 2000v FT2 18AWG).
The probe is hard plastic and comes with a spike tip, a hook tip and a flat tip for CRTs.
The only thing I didn't like? The specs appear nowhere on the probe itself, so I'll have to make a little tag for it "40kv DC / 28k AC".
I'm impressed!
-Mike from Detroit
Hold it by the (black) handle part and never touch the red part when measuring.
Most digital multimeters have an input impedance of 10M or 11M ohms. I have a bunch of $2 Harbor Freight multimeters (which actually have some really nice features the Extech doesn't have) and they go to to 1000vDC on their own, the readings were 478vDC with probe and 68 using the stock probes, LOL.
I've got other, higher voltage projects coming, but I like using this as added protection when I'm close to the upper range of my multimeters (900v-1000v)
My dad has 3 Fluke multimeters and he seemed impressed with this probe.
The spring loaded plugs are really, really nice. All the wiring feels like it's coated nice rubber and not cheap plastic (Huan 2000v FT2 18AWG).
The probe is hard plastic and comes with a spike tip, a hook tip and a flat tip for CRTs.
The only thing I didn't like? The specs appear nowhere on the probe itself, so I'll have to make a little tag for it "40kv DC / 28k AC".
I'm impressed!
-Mike from Detroit
