CEM DT-6650 3.5\

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DT-6650 rugged Multifunction Installation Tester with 3.5" TFT color LCD display, provides insulation resistance, earth resistance, loop impedance, voltage, RCD, PFG and PSC testing. It is designed with software system and ensure the safety of electrical installations in domestic, commercial and industrial applications. 6650 series can ensure the fixed wiring is safe and correctly installed. It's fast sampling and dual display, clear symbols and exceptionally wide viewing angle are for easy and safe read


3.5" TFT color LCD display with 320x240 pixels
Fast high current loop test
Variable RCD current mode for customized settings
PASS/FAIL indication for RCD tests
Select voltage measurement between L-N, L-PE and N-PE
Support SD memory and USB and  wireless interface
Internal Memory
Safe Earth Volt Touchpad detects raised earth voltages >50 V, indicating potential dangerous situations.
Slim probes designed with test button
For easy, always reliable and accurate compensation of test leads and mains cords.


Size (H x W x D): 220mm x 96.5mm x 60.5mm

Weight: 631g


Terminal VoltageRangeMax ResolutionAccuracyTest CurrentShort circuit current
125V (0% ~ +10)0.125~4000MΩ0.001MΩ±(2%+10)1mA@load 125kΩ≤1mA
250V (0% ~ +10)0.250~4000MΩ0.001MΩ±(2%+10)1mA@load 250kΩ≤1mA
500V (0% ~ +10)0.500~4000MΩ0.001MΩ±(2%+10)1mA@load 500kΩ≤1mA
1000V (0% ~ +10)1.000~4000MΩ0.001MΩ±(3%+10)1mA@load 1MΩ≤1mA
RangeResolutionAccuracyMax. open Circuit VoltageOverload Protection
Continuity Beeper
RangeResolutionOperation ResistanceMax. open Circuit VoltageOverload Protection
Short circuit current≥200mA
LOOP Resistance
L-PE (Hi-Amp)
Range (Ω)Max. Resolution (Ω)Accuracy
0.00~9990.01±(4% of reading+6 digits)
L-PE(No Trip): Measuring Current:15mA / Range of the Voltage Used: 195V a.c.~260V a.c.(56,60Hz)
Range (Ω)Resolution (Ω)Accuracy
0.00~9990.01±(5% of reading+6 digits)
L-N: Measuring Current:2.0A / Range of the Voltage Used:195V a.c.~260V a.c.(56,60Hz)
Range (Ω)Max. Resolution (Ω)Accuracy
0.00~9990.01±(4% of reading+4 digits)
RCD Testing
Test currentAccuracy
x1/2, x1, x2, x51.5%~ -9%
Voltage and Frequency
Measurement Range (V)/ AC-DCResolutionAccuracy
80-500V/(45-400Hz)1V±(2% of reading+2 digits)


Accessories: Test leads, 8 x1.5V“AAA” batteries, USB cable and Software, gift box with carrying case.



Company Information

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2.3366 s.