FNIRSI® S1 Large Screen Digital Display Smart Multimetert

- Maximum Voltage: 1000V CAT. III Pollution Degree: 2

- Altitude: <2000 m

- Operating Environment Temperature and Humidity: 0-40 ℃ (<80% RH, not considered below 10℃).

- Storage Environment Temperature and Humidity: -10-60 ℃ (<70% RH, battery removed).

- Temperature Coefficient: 0.1 accuracy/℃ (<18℃ or >28 ℃).

- Maximum Voltage Allowed between Measurement Terminals and Ground: 1000V DC or 1000V AC RMS

- Conversion Rate: Approximately 3 times/second

This product is a handheld large-screen digital display smart multimeter. It has the advantages of fast measurement data, large-screen LCD dual display, lighting, and easy reading by users. It has functions such as overload protection and battery undervoltage indication. Whether it is used by professionals, factories, schools, hobbyists or families, it is a rational think of the multi-function instrument. It belongs to secondary pollution, and the overvoltage standard is CAT III 1000V.

- Display: LCD with a maximum of 9999 counts, automatically displaying unit symbols according to the measurement range.

- Overload Indication: LCD displays "OL" when exceeding range.

- Low Battery Indication: Displays "" when battery voltage is below normal operating voltage.

- Input Polarity Indication: Automatically displays "-" sign.

- Power Source: Rechargeable lithium battery (3.7V/1000mA). Note: Device is not operational when powered on, displays "----". Unplugging the charger switches to normal measurement mode automatically.

- Reference Conditions: Ambient temperature 18℃ to 28℃, relative humidity not exceeding 80%.

**Connectivity and Power:**



- DC Voltage:

- Maximum Input Voltage: 1000V DC RMS

- Minimum Measurement Voltage: 0.75VDC

- Auto Range Mode Switchable with SEL Button in Smart Mode



- AC Voltage:

- Maximum Input Voltage: 1000V DC RMS

- Minimum Measurement Voltage: 0.75VDC

- Frequency Response: 50HZ-1KHZ True RMS

- Auto Range Mode Switchable with SEL Button in Smart Mode



- Resistance:

- Overload Protection: 250V DC/AC



- Beep On and Off:

- Overload Protection: 250V DC/AC



- Material: Plastic



- AC Voltage Range: 0-1000V



- DC Voltage Range: 0-1000V



- Measuring Resistance Range: 0-100MΩ



- Measuring Capacitance Range: 0-10mF



- Temperature Range: -20℃ to 1000℃



- Diode Test: Yes



- Auto-off: Yes



- Backlight: Yes



- Buzzer On/Off: Yes



- Auto Range: Yes



- Non-Contact Voltage (NCV) Detection: Yes



- Live Mode: Yes



- Data Hold: Yes



- Analog Display: Yes



- Low Voltage Indication: Yes

- 7.76 x 4.88 x 2.13 inches; 4.76 ounces



- 19.71 x 12.4 x 5.41 cm; 0.135 kilograms

- Packing box



- Digital Multimeter



- Manual



- Tip table pen



- Temperature probe



- USB charging cable

- Usage near devices with high electromagnetic interference may cause unstable readings or significant errors.

- Do not use the instrument if the appearance of the instrument or probes is damaged.

- Safety and Maintenance Habits:

- Incorrect usage may disable safety functions of the instrument.

- Extreme caution required when working around exposed conductors or busbars.

- Prohibited to use the instrument near explosive gases, vapors, or dust.

- Use correct input terminals, functions, and ranges for measurements, avoiding exceeding specified input limits to prevent instrument damage.

- Avoid touching unused input terminals when the instrument is connected to the circuit under test.

- Exercise caution when handling voltages exceeding 60V DC or 30V AC RMS to prevent electric shock.

- When using test probes, fingers should be placed behind the probe guard.

- Ensure test probes are removed from the circuit before changing ranges.

- For DC measurements, use AC function first to confirm the absence of AC voltage to prevent potential hazards from incorrect readings. Then, select a DC voltage range equal to or greater than the AC voltage.

- Before measuring resistance or conducting continuity tests, disconnect power to the circuit under test and discharge all high-voltage capacitors.

- Do not measure resistance or conduct continuity tests on live circuits.

- Avoid storing the instrument in flammable or explosive areas when not in use.

- Exercise caution when repairing televisions or measuring power conversion circuits to prevent damage from high-voltage pulses in the circuit under test.

- This product operates on a 3.7V/1000mA lithium battery, which must be correctly installed in the instrument's battery compartment.

- Recharge the battery promptly when the low battery symbol appears. Insufficient battery power may result in incorrect readings, potentially leading to electric shock or personal injury.

- Voltage measurements during measurement categories must not exceed 1000V.

- Do not use the instrument when its housing (or part of the housing) is removed.