HT Instruments HT7 Two-Pole Voltage Tester CAT III 1000V, CAT IV 600V with LCD, LED, Acoustic

The HT Instruments HT7 stands out from typical voltage testers by combining a clear LCD readout with LED indicators and acoustic signalling, while its load switch lets you trip RCD/FI breakers directly during testing. This two-pole tester handles both AC and DC voltages from 12 to 1000 V, making it suitable for a wide range of electrical installations.

Highlights

• Two-pole voltage testing with CAT III 1000 V and CAT IV 600 V safety ratings
• Measures AC and DC voltage from 12 V to 1000 V
• LCD display with backlight plus LED indicators for clear reading in any light
• Continuity test with optical and acoustic indication up to 500 kΩ
• Phase rotation test for three-phase systems
• Single-pole phase detection for quick checks
• Integrated flashlight and vibration feedback
• IP64 protection against dust and water splashes
• Powered by 2x AAA batteries (not specified if included)

In daily use

The HT7 responds in under 0.5 seconds, giving you fast, reliable readings. The backlit LCD and LED indicators ensure visibility even in dark distribution boards, while the acoustic continuity buzzer lets you keep your eyes on the test points. The built-in flashlight helps illuminate work areas, and the vibration function provides tactile confirmation when wearing gloves or in noisy environments. Its load switch allows safe tripping of RCD/FI breakers, simplifying installation testing.

Full specifications

• Voltage range AC: 12–1000 V
• Voltage range DC: 12–1000 V
• Display: LCD with backlight, LED indicators
• Continuity: 0–500 kΩ, optical and acoustic
• Phase rotation: yes, two-pole
• Single-pole phase test: yes
• Safety rating: CAT III 1000 V, CAT IV 600 V
• Protection class: IP64
• Power supply: 2x 1.5 V AAA batteries
• Response time: < 0.5 s
• Standard compliance: IEC/EN 61243-3:2014
• Load switch: yes (for RCD/FI tripping)

Final note

The HT7 is a robust and versatile voltage tester for professional electricians, offering comprehensive testing functions in a single tool.