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Overstock Deal Fnirsi® Sg-004a Multi-functional Signal Generator Now 30% Cheaper [ZKCq6OX8]

$25.99 $83.99 -69%

FNIRSI SG-004A signal generator is a high-performance device aimed at the industrial control industry. It can handle various working conditions with one device. The device has a simple but stable appearance design, simple operation logic and powerful

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Overstock Deal Fnirsi® Sg-004a Multi-functional Signal Generator Now 30% Cheaper [ZKCq6OX8]

FNIRSI SG-004A signal generator is a high-performance device aimed at the industrial control industry. It can handle various working conditions with one device. The device has a simple but stable appearance design, simple operation logic and powerful performance, and has been loved by consumers since it was launched. Support voltage, current, frequency, thermocouple and other signal mode output and input, support independent 24V power supply, programming mode, real-time curve, historical record, MODBUS communication, firmware upgrade and other powerful functions.
 

Features

  • ≤0.2% Error
  • Engineering quantity / signal value
  • Real-Time curve record view
  • 2.4"TFT Full Color HD display with backlight
  • Designed for industrial control industry
  • stable appearance design.
  • Supports voltage, current, frequency, thermocouple, and other signal modes for both output and input. 
  • Provides support for independent 24V power supply
  • Offers programming mode for customization
  • Facilitates real-time curve visualization
  • Allows for historical data recording
  • Supports MODBUS communication protocol
  • Enables seamless firmware upgrades
  • Incorporates other powerful functions for enhanced functionality

Basic Specification:

Brand
FNIRSI
Model
SG-004A
Screen
2.4"TFT Full Color HD display
Product Size
L82*W27*H112mm
Product Weight
0.050 kg / 1.76 ounces
Battery
3000mAh rechargeable lithium battery
Charging Type
USB-C port 5V-12V/10W(Max)
Standby Time
24h
 

Output Signal:

Active Current
0-24mA
Passive Current
0-24mA
Voltage
0-24V
Frequency / PWM
0-9999Hz
24V Loop
0-24mA
Thermocouple
-10~100mV
Resistance / Thermal Resistance
0-390Ω
 

Input Signal:

Active Current
0-24mA
Voltage
0-24V
Frequency / PWM
0-9999Hz
Thermocouple
-10~100mV
Resistance / Thermal Resistance
0-400Ω
 

Extended Function:

  • Program automatic lift output
  • Signal linear conversion output
  • History record
  • Modbus slave
  • Preset output
  • Real-time curve
  • Output timing
  • USB Emulated U Disk Firmware Upgrade

Technical Parameter:

Current (mA)
Range: 0~24mA
Accuracy: ±(0.02%+0.003)
Resolution: 0.001mA
Load Resistance: 100Ω
Voltage (V)
Range: 0~24V
Accuracy: ±(0.02%+0.003)
Resolution: 0.001mA
Load Resistance: 500K
Passive (XMT)
Range: 0~24mA
Accuracy: ±(0.02%+0.003)
Resolution: 0.001V
Load Resistance: 100Ω
24V Loop
Range: 0~24mA
Accuracy: ±(0.1%+0.005)
Resolution: 0.001mA
Load Resistance: 100Ω
Frequency (Hz)
Range: 0~9999Hz
Accuracy: ±2%
Resolution: 5 digits
Load Resistance: 1MK
Millivolt (mV)
Range: -10~100mV
Accuracy: ±(0.03%+0.003)
Resolution: 0.001mV
Load Resistance: 2K
Thermocouple (TC-S)
Range: 0~1760℃
Accuracy: ±(0.2%+1)
Resolution: 1℃
Load Resistance: 2K
Thermocouple (TC-B)
Range: 0~1810℃
Accuracy: ±(0.5%+1)
Resolution: 1℃
Load Resistance: 2K
Thermocouple (TC-E)
Range: 0~990℃
Accuracy: ±(0.2%+1)
Resolution: 1℃
Load Resistance: 2K
Thermocouple (TC-K)
Range: 0~1320℃
Accuracy: ±(0.2%+1)
Resolution: 1℃
Load Resistance: 2K
Thermocouple (TC-R)
Range: 0~1760℃
Accuracy: ±(0.3%+1)
Resolution: 1℃
Load Resistance: 2K
Thermocouple (TC-J)
Range: 0~1190℃
Accuracy: ±(0.3%+1)
Resolution: 1℃
Load Resistance: 2K
Thermocouple (TC-T)
Range: 0~390℃
Accuracy: ±(0.2%+1)
Resolution: 1℃
Load Resistance: 2K
Thermocouple (TC-N)
Range: 0~1290℃
Accuracy: ±(0.2%+1)
Resolution: 1℃
Load Resistance: 2K
Thermocouple (WRe3/25)
Range: 0~2320℃
Accuracy: ±(0.2%+1)
Resolution: 1℃
Load Resistance: 2K
Thermocouple (WRe3/26)
Range: 0~2320℃
Accuracy: ±(0.2%+1)
Resolution: 1℃
Load Resistance: 2K
Resistance (ohm)
Range: 0~390Ω
Accuracy: ±(0.2%+1)
Resolution: 0.1℃
Pt100
Range: -200~650℃
Accuracy: ±(0.5%+1)
Resolution: 0.1℃
Cu50
Range: -20~150℃
Accuracy: ±(0.5%+1)
Resolution: 0.1℃
 

What Our Customers Say

February 4, 2026

Absolutely no complaints!

It’s a very clever and reliable tool.

- Jocosa Y..

February 4, 2026

Absolutely no complaints!

A great gadget that is very impressive.

- Zillah F..

February 4, 2026

Absolutely no complaints!

This is a very well-made, useful tool.

- Addison B..

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