Kewtech KT1790 2 Pole LED & LCD Voltage Tester


£59.99 / £49.99 excl VAT

⚡ Clear oversize luminous LEDs and LCD voltage indication

⚡ Clear audible tone

⚡ UK Specific GS38 Slender probe tips NO NEED to swap ends

⚡ Bright torch light – gives ample illumination

⚡ Fit into recessed terminals such as RCBOs without unscrewing any caps

42 in stock


Product Details:

Easy to use, with integrated GS38 slender probe tips and a range of useful testing functions, the Kewtech 1790 is a two-pole voltage tester that makes a perfect addition to a professionals’ instruments.

Capable of carrying out all necessary voltage testing procedures, including AC/DC voltage tests to 690V, continuity, single pole phase testing, phase rotation and an indication of polarity, the KT1790 voltage tester uses both LED indicators on a scale and shows full test values on a built-in LCD screen.

Working in darkened environments? A built-in torchlight will help you see in the dark and keep testing safely. The KT1790 is also capable of easily fitting inside recessed terminals such as RCBOs without unscrewing the caps, making life easier for the user.

Key Features:

  • UK specific slender probe tips compliant with GS38
  • Designed in compliance with IEC 6124303 and IEC 61010-1
  • CAT IV 600V
  • Clear oversize LED indication
  • LCD voltage indicators
  • AC and DC voltage testing up to 690V
  • Continuity test with clear audible tone
  • Single pole phase testing
  • Polarity indication
  • Phase rotation testing
  • Self-diagnostic testing
  • Double moulding for extra comfortable grip at all times
  • Auto power on/off
  • Extra bright white light pen torch
  • IP65 protection against water and dust


LED Tolerance 7 ± 3V (12V LED), 18±3V (12V LED), 37.5V±4V (50V LED)
75%±5% of nominal voltage (120/230/400/690V LED)
LED Response Time <0.6s at 100% of each nominal voltage
LCD Auto/Range Resolution 300V (6.0-299.9)/0.1V, 690V (270-759AC/710DC)/1V
LCD Accuracy (23 /-5°C)  ±1.5V (7-100V), ±1% ± 5 digit (100-690V), AC (16-400Hz), DC(±)
LCD Response Time <1s at 90% of each voltage
Peak Current Is<3.5mS (at 690V)
Internal Battery Consumption Approx 80mA (battery 3V, measuring 690V AC)
Measurement Duty 30S On (Operational Time) 240S Off (Recovery Time)
Voltage Range 100-690V AC (45-100Hz)
System Three-phase 4-wire system
200-690V phase-to-phase
(100-400V earth-to-phase)
AC 50/60Hz
Detection Range 0-400kΩ 50% (23 ± 5°C)
Test Current Approx 1.5μA (battery 3V, 0Ω)
Internal Battery Consumption Approx 80mA (battery 3V, 0Ω)
 Operating Reference Conditions -15 – 55°C no condensation max 85% RH
Storage Reference Conditions -20-70°C no condensation max 85% RH
Safety Standards IEC 61010-1:2010, IEC 61243-3:2010, IEC 601010-031: 2008
Category: CAT III 690, CAT IV 600V pollution degree 2
IEC 61557-7: 2007
IP Rating IP65 (IEC60529)
Dimensions 243 x 64 x 26mm
Weight 190g (including batteries)
Batteries 3V (2 x 1.5V AAA/LR03)
  • Kewtech KT1790 Voltage Tester
  • Built-In Test Leads
  • Batteries
  • Printed Instruction Manual with Certificate of Conformity on Reverse Side