SMART SENSOR ST9620

Contents

SMART SENSOR Digital Lux Meter ST9620 User Manual

Model: ST9620

1. Introduction

The SMART SENSOR Digital Lux Meter ST9620 is a stable, safe, and reliable instrument designed for measuring light illuminance. It also provides ambient temperature readings. This device is widely used in various fields such as homes, offices, schools, businesses, road light construction, and laboratories.

Key features include a wide measurement range of 1-200,000 Lux, automatic/manual range shifting, switchable Lux/FC units, MAX/MIN/Data Hold functions, high accuracy, and an LCD display with backlight for easy operation in low-light conditions. It also features low battery indication and an auto power-off function for energy saving.

SMART SENSOR Digital Lux Meter ST9620 with user manual
Figure 1: SMART SENSOR Digital Lux Meter ST9620 and included user manual.

2. Safety Information

Warning: Keep the device and its cord out of reach of children under 3 years old.

To ensure safe operation and prolong the life of your device, please observe the following:

  • Do not store the device in environments with high temperature, high humidity, high concentration of salt, or sulfur.
  • If the device will not be used for an extended period, remove the batteries to prevent leakage.

3. Package Contents

Upon opening the package, please verify that all items are present and in good condition:

  • 1 x Digital Lux Meter (ST9620)
  • 1 x String (Lanyard)
  • 1 x User Manual (English)

4. Setup and Battery Installation

  1. Preparation: Remove all protective packaging materials from the equipment.
  2. Inspection: Carefully inspect the product for any signs of damage or missing components.
  3. Battery Installation:

    The device requires 3 x 1.5V AAA batteries (not included). To install the batteries:

    Back view of the Digital Lux Meter ST9620 with the battery compartment open, showing space for 3 AAA batteries.
    Figure 2: Open battery compartment for 3 AAA batteries.
    1. Locate the battery compartment cover on the back of the device.
    2. Slide or unclip the cover to open the compartment.
    3. Insert three 1.5V AAA batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
    4. Replace the battery compartment cover securely.

5. Operating Instructions

Detailed diagram of the Digital Lux Meter ST9620 front panel, labeling Sensor Protection Cover, Luminosity Sensor, LCD Display, Power On/Off Key, Data Hold (Maximum and Minimum) Key, Luminosity Unit Selection, and High and Low Luminosity alarm Setup Key.
Figure 3: Front panel and button functions of the ST9620.
Detailed diagram of the Digital Lux Meter ST9620 display, labeling maximum/minimum luminosity value, battery power icon, humidity units, luminosity reading area, temperature unit, temperature reading area, high/low luminosity alarm, alarm units, and data hold icon.
Figure 4: LCD Display elements and indicators.
  1. Power On/Off:

    Press the Power On/Off Key (Power button icon) to turn the device on or off.

  2. Taking Measurements:

    Point the Luminosity Sensor (located at the top of the device, protected by a cover) towards the light source you wish to measure. The illuminance value will be displayed on the LCD screen in the Luminosity Reading Area.

    Hand holding the Digital Lux Meter ST9620 in an office environment, measuring light.
    Figure 5: Measuring light in an office setting.
  3. Unit Selection (Lux/FC):

    Press the UNIT Key to switch between Lux and FC (Foot-Candle) measurement units. The selected unit will be displayed on the screen.

  4. Data Hold (MAX/MIN):

    Press the Data Hold (Maximum and Minimum) Key (labeled "MODE" on the device, but functions as data hold) to freeze the current reading on the display. Press it again to release. The device also supports displaying maximum and minimum recorded values during a measurement session.

  5. Backlight:

    The LCD display features a backlight for improved visibility in dark environments. This backlight activates automatically or can be toggled (specific button not explicitly labeled, but it's a standard feature).

  6. High and Low Luminosity Alarm Setup:

    Use the High and Low Luminosity alarm Setup Key (labeled "SET") to configure alarm thresholds. When the measured luminosity exceeds or falls below these thresholds, an alarm will be triggered (indicated by "High Alarm" or "Low Alarm" on the display).

  7. Auto Power Off:

    The device is equipped with an auto power-off function to conserve battery life. If no operation is performed for a certain period, the meter will automatically shut down.

6. Maintenance and Storage

  • Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
  • Storage: After use, turn off the device and store it in a dry place, away from direct sunlight and extreme temperatures. Ensure it is kept out of reach of children.
  • Battery Care: If the device will not be used for a long period, remove the batteries to prevent potential leakage and damage to the circuitry.

7. Troubleshooting

This section provides solutions to common issues you might encounter with your Digital Lux Meter.

Problem Possible Cause Solution
Device does not power on.
  • Batteries are dead or incorrectly installed.
  • Battery compartment is not closed properly.
  • Replace with new AAA batteries, ensuring correct polarity.
  • Ensure the battery compartment cover is securely closed.
Inaccurate readings.
  • Sensor protection cover is still on.
  • Sensor is dirty.
  • Device is not calibrated (unlikely for consumer models).
  • Remove the sensor protection cover before measurement.
  • Gently clean the sensor with a soft, dry cloth.
  • If issues persist, contact customer support.
Display is dim or flickering.
  • Low battery power.
  • Replace the batteries.

8. Specifications

Feature Detail
Brand Name SMART SENSOR
Model Number ST9620
Display LCD Display with Backlight
Measuring Range 1-200,000 Lux
Resolution 1 Lux
Accuracy <10,000 Lux (±4%rdg±10), >10,000 Lux (±5%rdg±10)
Temperature Range -10～50℃ / 14～122℉
Refresh Rate 2 times/sec
Repeatability ±2%
Operating Temperature & Humidity 0-40℃ (≤80%RH non-condensing)
Storage Temperature & Humidity -10-50℃ (0-90%RH)
Power Supply 3 * 1.5V AAA Batteries (Not Included)
Item Weight 95g / 0.21lb
Item Size 17 x 5 x 2.8 cm / 6.69 x 1.97 x 1.1 in
Origin Mainland China
Battery Included No
High-concerned chemical None
Digital Lux Meter ST9620 showing 180° rotatable sensor and dimensions (17cm/6.69in height, 5cm/1.97in width, 2.8cm/1.1in depth).
Figure 6: Device dimensions and 180° rotatable sensor.

9. Warranty and Support

For detailed warranty information and customer support, please refer to the official user manual PDF or contact the manufacturer directly.

  • User Manual (PDF): A digital version of this manual is available for download: Download User Manual (PDF)
  • Manufacturer: Shandong Sko Tools Co., Ltd
  • Manufacturer Address: No. A9-115, Aode Shanshan International Trade City, Jiuqu Street, Hedong District, Linyi City, Shandong Province
  • Manufacturer Email: 18653556153@163.com
  • Manufacturer Telephone: 86-18653556153
  • EU Authorized Representative: Nenninger GmbH
  • EU Representative Address: Friedrichstr. 95, 10117 Berlin, Germany
  • EU Representative Email: nenningerde@gmail.com
  • EU Representative Telephone: 49-12345678910

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