1. Introdución
The PeakMeter PM8908B is a professional, pen-style non-contact AC voltage detector designed for safe and easy voltage testing. This device can detect AC voltage ranging from 12V to 1000V, offering adjustable sensitivity for various applications. It features sound and light alarms, automatic power-off, and a built-in flashlight for convenience in dimly lit environments. Its compact design ensures portability and ease of use.
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your PM8908B voltage detector. Please read it thoroughly before using the device.
2. Información de seguridade
Always adhere to safety precautions when working with electrical systems. This device is designed to enhance safety, but it does not replace proper electrical safety practices.
- This device is designed according to safety requirements EN61010-1-2-030, EN61010-2-033, and CAT.III1000V.
- Non empregues o dispositivo se parece estar danado ou non funciona correctamente.
- Always test the detector on a known live circuit before and after use to confirm proper operation.
- Non intente medir o voltages exceeding the specified range (1000V AC).
- Keep hands and fingers away from the tip of the detector during operation.
- Substitúa as pilas canto antes apareza o indicador de pila baixa para garantir lecturas precisas.
3. Produto rematadoview
The PeakMeter PM8908B is a compact, pen-style device with intuitive controls and indicators.


Compoñentes clave:
- Consello de detección: Non-contact probe for sensing AC voltage.
- Lanterna: White LED light for illuminating dark areas.
- Botón de encendido: Acende/apaga o dispositivo.
- Alarm/Sensitivity Button: Adjusts sensitivity and controls the alarm.
- Indicadores LED: Red LED for live wire detection, green LED for power/flashlight.
- Rotatable Battery Cover: For easy battery replacement.
4. Configuración
4.1 Instalación da batería
The PM8908B requires two (2) 1.5V AAA batteries for operation.
- Locate the rotatable battery cover at the top end of the detector.
- Rotate the cover counter-clockwise to open it.
- Insira dúas pilas AAA de 1.5 V, asegurándose de manter a polaridade correcta (+/-) como se indica no interior do compartimento.
- Replace the battery cover by rotating it clockwise until it is securely closed.
The device will automatically power on after battery installation or when the power button is pressed.
5. Instrucións de funcionamento
5.1 Encendido/apagado
- Press the power button (usually marked with “⑉”) to turn the detector on. The green LED will illuminate.
- To turn off, press and hold the power button for approximately 2 seconds. The device also features an auto power-off function to conserve battery life after a period of inactivity.
5.2 Vol. AC sen contactotage Detección
The PM8908B detects AC voltage without direct contact with the conductor.
- Acende o detector.
- Bring the detection tip close to the wire, outlet, or electrical component you wish to test.
- Se AC voltage is detected, the red LED indicator will flash, and an audible alarm will sound. The frequency of the flashing and beeping increases with higher voltage ou máis preto da fonte.

5.3 Axuste da sensibilidade
The detector offers three levels of sensitivity (High, Medium, Low) for different detection scenarios.
- Press the alarm/sensitivity button (usually marked with a bell icon) to cycle through the sensitivity modes.
- The device will indicate the current sensitivity level through a combination of beeps or LED flashes.
- Use high sensitivity for detecting voltage from a greater distance or through insulation. Use low sensitivity for more precise localization of voltage fontes.
5.4 Zero Line and Fire Line Distinction
The PM8908B can automatically distinguish between the Zero (Neutral) Line and the Fire (Live) Line.
- When testing an AC outlet or cable, the detector will provide a stronger and more consistent alarm (faster flashing red LED and quicker beeps) when near the live wire.
- The neutral wire will typically result in no alarm or a significantly weaker/intermittent alarm, depending on the sensitivity setting and environmental factors.
5.5 Función da lanterna
The built-in white LED flashlight assists in working in dark areas.
- Press the flashlight button (often integrated with the power button or a separate button) to turn the flashlight on or off.

6. Mantemento
6.1 Substitución da batería
When the low battery indicator appears, replace the batteries as soon as possible to ensure accurate operation. Refer to Section 4.1 for battery installation instructions.
6.2 Limpeza
Wipe the device with a dry, clean cloth. Do not use abrasive cleaners or solvents. Ensure the device is powered off before cleaning.
6.3 Almacenamento
Store the detector in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for an extended period, remove the batteries to prevent leakage.
7 Solución de problemas
| Problema | Causa posible | Solución |
|---|---|---|
| O dispositivo non se acende. | Baterías gastadas ou instaladas incorrectamente. | Check battery polarity or replace with new 1.5V AAA batteries. |
| No detection or weak signal. | Low battery, incorrect sensitivity setting, or no AC voltage presente. | Replace batteries. Adjust sensitivity to 'High'. Test on a known live circuit. |
| Falsos positivos (detecta voltage where none is expected). | High sensitivity setting, static electricity, or induced voltage. | Reduce sensitivity. Ensure proper grounding of the circuit being tested. |
| Flashlight does not work. | Low battery or flashlight function not activated. | Replace batteries. Press the flashlight button to activate. |
8. Especificacións
The following table outlines the technical specifications for the PeakMeter PM8908B Non-Contact AC Voltage Detector.

| Parámetro | Especificación |
|---|---|
| Modelo | PM8908B |
| Voltage Sensibilidade | 12V a 1000V AC |
| Frecuencia | 50-60 Hz |
| Modo de alarma | Son e Luz |
| Luz de flash | LED branco |
| Apagado automático | Si |
| Temperatura de funcionamento | 32 a 122 ℉ (0 a 50 ℃) |
| Temperatura de almacenamento | -4 a 140 ℉ (-20 a 60 ℃) |
| Humidade | Menos do 85% RH |
| Batería | 2 pilas AAA de 1.5 V |
| Dimensións do elemento | 16 x 2 x 2 cm |
| Peso do elemento | 50 g |
| Valoración de seguridade | EN61010-1-2-030, EN61010-2-033, CAT.III1000V |
9. Garantía e soporte
Specific warranty information for the PeakMeter PM8908B is not provided in the product details. For warranty claims or technical support, please refer to the retailer or manufacturer's official websitio onde se comprou o produto.