SPEED418 has been specifically developed to measure Overall earth resistance with no RCD tripping, and for operating tests of RCDs type A, AC General and Selective with tests both in manual and automatic mode in private electric installations.


Extremely simple to use, with setting of parameters via scrollthrough menu. It has no mechanical commuters and it is therefore more solid in structure. The device is provided with an internal memory for saving measurements and with an optical/USB interface for transferring measured data onto the PC. At the end of the test, the device shows all results with the indication of compliance or non-compliance with the standards with simple symbols OK or NOT OK.

HT Instruments Speed 418 Safety and Ground/Earth Resistance Tester

  • Please allow 4-5 weeks for this product to arrive.

    This product comes with a 1 year manufacturer warranty. 

For Sales, Calibration, or Repair Services Call 1 (888) 868 - 4546

Contact Us 

750 Oakdale Rd Unit 52

Toronto, Ontario

M3N 2Z4 Canada

Local: (905) 406-0100


meatest logo.png
tinsley logo.jpg

We Accept

1 (888) 868 - 4546

Visit our Top Rated Seller

eBay and Amazon Stores

keithley logo.png
keysight logo.png
EA logo.PNG
ODA logo.png
isa logo.png
HT logo.jpg
sonel logo.jpg
ebay top rated.png
saluki - Square.jpg
langer logo good.PNG
detectus logo.jpg
megiq logo.PNG
  • Facebook - Grey Circle