1. Introducció
The HIOKI Voltage Detector 3481 is a compact, non-contact AC voltage detector designed for electrical professionals and DIY enthusiasts. It provides a safe and efficient way to check for live wires, featuring both visual (red LED) and audible (buzzer) indications. Its integrated tip light aids in dark environments, and adjustable sensitivity allows for versatile use.

Image 1: HIOKI Voltage Detector 3481. This image shows the compact design of the voltage detector.
2. Precaucions de seguretat
Per garantir un funcionament segur i evitar danys al dispositiu o lesions, observeu les precaucions següents:
- Always read and understand this manual completely before using the device.
- No utilitzeu el dispositiu si sembla que està danyat o no funciona correctament.
- Ensure proper insulation and wear appropriate personal protective equipment (PPE) when working with electrical circuits.
- This device detects the presence of AC voltage; no mesura el vol.tage nivells.
- Always verify detection with a known live source and a known de-energized source before and after use.
- El vol operatiutage range for this device is 40 V to 500 V AC. Do not use outside this range.
- No intenteu obrir ni modificar el dispositiu. Envieu totes les tasques de manteniment a personal qualificat.
3. Contingut del paquet
Verifiqueu que tots els elements siguin presents al paquet:
- HIOKI Voltage Detector 3481 unit x 1
- LR44 button alkaline batteries x 3 (for trial purposes)
- Manual d'instruccions x 1
4. Producte acabatview i Característiques
The HIOKI Voltage Detector 3481 offers the following key features:
- Vol. AC sense contactetage Detecció: Detecta amb seguretat la presència de vol de CAtagi sense contacte directe.
- Visual and Audible Indication: A red LED illuminates and a buzzer sounds when a live wire is detected.
- Integrated Tip Light: A bright white LED at the tip illuminates the work area, useful in dark environments.
- Sensibilitat ajustable: Detection sensitivity can be adjusted within the range of AC40V to 80V.
- Apagat automàtic: The device automatically powers off after approximately 3 minutes of inactivity to conserve battery life.
- Disseny compacte i lleuger: Easy to carry and handle for various applications.
5. Setup (Battery Installation)
The HIOKI Voltage Detector 3481 requires three LR44 button alkaline batteries for operation. These are included for trial purposes.
- Locate the battery compartment cover, typically at the rear or base of the unit.
- Open the battery compartment cover. This may require a small screwdriver or coin, depending on the design.
- Insert three LR44 button alkaline batteries, ensuring correct polarity (+ and -) as indicated inside the compartment.
- Tanqueu de manera segura la tapa del compartiment de la bateria.
- To check battery status, turn on the device. A dim or off white LED indicates low batteries, requiring replacement.
6. Instruccions de funcionament
Follow these steps to use your HIOKI Voltage Detector 3481:
- Encès: Press the power button to turn on the device. The integrated tip light will illuminate.
- Ajustar la sensibilitat: If your model features a sensitivity adjustment, use the dial or button to set the desired detection range. The factory default sensitivity at shipment is 80V AC.
- Detectar Voltage: Bring the tip of the detector close to the wire, outlet, or electrical component you wish to test. If AC voltage is present within the detection range, the red LED will light up, and the buzzer will sound.
- Utilize Tip Light: The integrated tip light can be used independently to illuminate dark work areas or automatically during voltage detecció.
- Apagat automàtic: El dispositiu s'apagarà automàticament després d'aproximadament 3 minuts d'inactivitat per estalviar bateria.

Image 2: HIOKI Voltage Detector 3481 in operation, showing the tip light illuminating a connection point.
7. Manteniment
Proper maintenance ensures the longevity and accuracy of your device:
- Neteja: Wipe the device with a dry, soft cloth. Do not use abrasive cleaners, solvents, or immerse the device in water.
- Substitució de la bateria: Replace batteries promptly when the white LED is dim or off. Always use new LR44 button alkaline batteries. Dispose of old batteries according to local regulations.
- Emmagatzematge: Store the device in a cool, dry place, away from direct sunlight, high humidity, and extreme temperatures. Remove batteries if storing for extended periods (more than one month) to prevent leakage.
8. Solució De Problemes
If you encounter issues with your HIOKI Voltage Detector 3481, refer to the following common problems and solutions:
| Problema | Causa possible | Solució |
|---|---|---|
| No indication (LED/Buzzer) on a known live wire. | Low batteries, device not powered on, incorrect sensitivity setting, voltage fora de l'abast. | Check battery level and replace if low. Ensure the device is powered on. Adjust sensitivity setting. Verify the wire is within the operating voltagrang e (40V a 500V AC). |
| False positives (indication on a de-energized wire). | High sensitivity setting, environmental interference (e.g., static electricity, induced voltagi). | Adjust sensitivity to a lower setting. Ensure proper grounding of the circuit being tested. Test in a different location if possible. |
| Tip light is dim or off. | Bateries baixes. | Replace all three LR44 batteries. |
| Device automatically turns off too quickly. | Normal operation (auto power-off feature). | The device is designed to power off after approximately 3 minutes of inactivity to save battery life. Turn it back on if needed. |
9. Especificacions
Detailed specifications for the HIOKI Voltage Detector 3481:

Image 3: Detailed specifications table for the HIOKI Voltage Detector 3481.
| Característica | Descripció/Valor |
|---|---|
| Funció de mesura | Voltage detecció |
| Vol. Operatiutage Rang | 40 V to 500 V AC (When brought into contact with a 2 mm² insulated cable equivalent to 600 V polyvinyl chloride insulated wire) |
| Maximum Sensitivity Variable Range | 40 V to 80 V AC (80 V at the time of shipment) |
| Freqüència de funcionament | 50 Hz / 60 Hz |
| Llum pilot | Red LED lights up and the buzzer sounds when the wire is live. Integrated white LED tip light. |
| Comprovació de la bateria | White LED is dim or out when the batteries are low. |
| Apagat automàtic | The power will be turned off automatically if the instrument remains idle for 3 minutes after the power is turned on. |
| Font d'alimentació | LR44 button alkaline batteries × 3. Continuous use: 5 hr (Power ON standby state). |
| Dimensions (A×A×P) | 20 mm (0.79 in) × 126 mm (4.96 in) × 15 mm (0.59 in) (excluding projections) |
| missa | 30 g (1.1 oz) (including LR44 button alkaline batteries) |
| Temperatura de funcionament | Fins a 50 graus centígrads |
| Normes de seguretat | CE, CSA, EMC, EN 61010-1, ETL, FCC, IEC 61010-1:2000-1, IEC 61326, IP 40, IP 67, RoHS, UKCA, UL |
| Fabricant | Xina |
10. Garantia i Suport
Hioki products are manufactured to high-quality standards. For specific warranty information and technical support, please refer to the official Hioki website or contact your local authorized distributor. It is recommended to retain your purchase receipt for any warranty claims.
For further assistance or inquiries, please visit the official Hioki weblloc: www.hioki.com