This file is a user manual for testo 745 contactless voltage tester
This manual provides safety guidelines and operating instructions for the Testo 745 non-contact voltage tester. It covers how to use the device for voltage detection in the 12–1000 V range, including sensitivity settings and illumination features. Safety precautions are emphasized, especially for voltages above 120 V AC. Maintenance includes battery replacement and cleaning procedures.
Technical specifications are listed, including voltage sensitivity, frequency range, temperature tolerance, and IP67 protection. The manual also includes disposal and environmental guidelines for the device and its batteries.
| Voltage Indicator | Red LED and buzzer |
|---|---|
| Sensitivities | 50 to 1000 V (standard setting) 12 to 50 V (high sensitivity, also displays voltages of 50 to 1000 V) |
| Frequency Range | 40 to 400 Hz |
| Temperature Range | Operation: -10 to 50 °C Storage: -15 to 60 °C |
| Relative Humidity | < 80 % |
| Height | < 2000 m |
| Batteries | 2x 1.5 V IEC LR03 (AAA) |
| Power Consumption | Approx. 80 mA |
| Dimensions | Approx. 155 x 25 x 23 mm |
| Weight | Approx. 55 g |
| Standards | EN 61326-1, EN 61010-1 |
| Protection Class | IP 67 (IEC 60529) |
| Warranty | 2 years |
The instrument detects AC voltages from 12 to 1000 V, with two sensitivity settings: 50–1000 V (standard) and 12–50 V (high sensitivity).
Open the battery compartment, remove the spent batteries, insert new AAA batteries according to the icon, and close the compartment.
Only trained personnel should use the instrument. Avoid contact with voltages above 120 V AC, and ensure the device is not used in explosive or wet environments.
A slowly flashing red LED indicates the instrument is ready. Single flash means 50–1000 V range, double flash means 12–50 V range.