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Test Instrument Solution


The TIS 870 features the very latest technology in fuse/breaker location. The advanced microprocessor locates the fuse / breaker with pin-point accuracy by using the very latest second pass technology. Simply plug the transmitter into the circuit to test then pass the receiver over the fuses / breakers. You will hear several tones on various breakers, etc. Then pass over them for a second time when only one of the fuse / breakers will cause the tis 870 to light up ,indicating by tone which is protecting the circuit under test. The TIS 870 also features a non contact voltage tester and the transmitter also acts as a socket tester with “buzzer“.

Available in delivery or click&collect

EX. VAT: £82.00


Special Functions
•  Quickly, Easily and Accurately Identifies the Fuse/Breaker Built-in Non Contact Voltage Test
•  Fully Automatic Operation
•  Very Latest 2nd Pass Technology
•  Rugged Design
•  Two Part Kit: Transmitter and Receiver Lifetime Warranty
•  Verifies presence of AC Voltage
•  Can Locate Breaks in Cables
•  Buzzer and LED Indication

Power 1 x 9V MN1604 Battery
Weight 95g
Size 175mm x 45mm x 30mm

Frequently asked questions

Test equipment is used to diagnose, measure, and evaluate electrical circuits and systems. It ensures systems operate correctly and safely, helps identify faults, and verifies compliance with standards.

Common types include:

  • Multimeters: Measure voltage, current, and resistance.
  • Insulation testers: Test the insulation resistance of electrical installations.
  • PAT testers (Portable Appliance Testers): Check the safety of electrical appliances.
  • Clamp meters: Measure current without disconnecting the circuit.
  • Voltage testers: Detect the presence of voltage in a circuit.
  • Oscilloscopes: Display and analyze the waveform of electrical signals.

Read the manual: Follow the manufacturer’s instructions and guidelines.

Check for damage: Inspect the equipment and leads for any signs of damage before use.

Use appropriate settings: Ensure the equipment is set to the correct range and function.

Wear protective gear: Use appropriate personal protective equipment (PPE) such as gloves and safety glasses.

Avoid live circuits: Whenever possible, test circuits should be de-energized before testing.

Test equipment should be calibrated regularly to ensure accuracy. The frequency of calibration depends on the manufacturer’s recommendations, the equipment’s usage, and industry standards. Typically, annual calibration is common.

The use of test equipment in the UK is governed by several regulations, including:

  • Electricity at Work Regulations 1989: Requires electrical systems to be maintained to prevent danger.
  • BS EN 61010: Safety requirements for electrical test and measurement equipment.
  • Health and Safety at Work Act 1974: General duty to ensure the safety of employees and the public.

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