TIS TIS CHECKBOX, Instruction Manual

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INTRODUCTION & SAFETY
TIS Checkbox is a professional, multifunctional field checkbox, intended for use with all makes and models of
installation test instruments.
In addition to its durable body and simple operation it boasts the following features:

Insulation calibration with test voltages up to 1000 V,

LowΩ and continuity accuracy verification,

Continuity and insulation of measurement leads verification,

Hi Current and “No-trip loop” impedance measurement verification

Verification of RCD trip-out time measurement, including test current verification - 30 mA X1/X5.

Voltage and frequency calibration (A calibrated Multimeter to be used to verify mains voltage &
frequency).
Recommended Multimeter(s):
TIS201 TIS280
Please visit our web site: www.testinstrumentsolutions.co.uk to explore the full range of test instruments we
provide.
The TIS Checkbox is designed for accuracy verification whilst on-site testing, this product does not
replace the need to have the instrument calibrated periodically.
(Please refer to the manufacturers recommended calibration interval)