Low Power Intelligent Programmable Control Voltage/Current (Quad LED) Digital Display:SY LED6
Product Category: Intelligent Current Signal LED Display Meter
Input: 4-20mA,0-20mA,0-5V,0-10V Output: Customized
Power: -- Isolation Voltage: --
Package: Panel embedded Traffic Watch: times
Remarks: Low Power Consumption Voltage Current LED Display Meter
Keywords: Low Power   Intelligent   Programmable   Control   Digital Display  
Product Description
Low Power Intelligent Programmable Control Voltage/Current (Quad LED) Digital Display:SY LED6

● Low cost module design, easy to be embedded
into other meters and instruments.
● High measuring accuracy, 4 byte display,
±2 digit.
● LED display panel, can be used in different
lighting conditions.
● Small size: 79x43x23mm
● Cut-out size: 76.5×39.2 (+0.1mm
Weight: 40g
● Industrial grade temperature range: -40
℃ ~
+85, high reliability.

● Sensor, transmitter operation status display.
● Industrial equipment operating monitoring,
measurement and remote controlling.
● Oil, chemistry, environment protection, mining
system monitoring.
● Temperature, pressure, flow, level signal monitoring
and display.
● PLC, DCS system operation data acquisition and
● Meters & instrument, medical devices, industrial
controlling device design.

SunYuan SY LED6 Digit display meter is a current voltage meter with wiring socket used in transmitter
measuring circuit. It can display current voltage signal (0~5V, 0~10V, 1~5V, 0~±200mV, 0~20mA, 4~20mA, etc
signal) in linearity and in decimal base based on the pre-setting range.
That LED display meter operates in equal and stable brightness and its LED panel is driven by constant
current. It has reverse polarity and over current protection circuit, and widely used in temperature, pressure,
flow, level signal controlling and monitoring system in industrial site, oil industry, environment monitoring,
mining industry, etc. Usually, the temperature sensor, pressure sensor, flow sensor, level sensor signal are
converted into standard voltage current signal, and then connect it into that LED meter to display the sensor
signal to make it easy to monitoring and controlling.
There are two types of connection: 2-wire passive connection, it is applied for 4-20ma signal, no external
power supply required. 3-wire active connection, it is applied for 0-5V, 0-10V, 1-5V, 0-20mA, etc signal,
external power supply required, the power supply can be 5V, 12V, 15V, 24V. There is 2 buttons on the
backside of the panel meter; it is used to set zero, span, decimal points, alarm, delay, etc parameters.
The input signal and the digits displayed are in linearity. For example, input signals 0-10V, the panel display
0-1000, the linear relationship: 0V displays 0, 5V displays 500, 10V displays 1000. If input is 4-20mA current
signal, the LED panel displays 40-200, the linear relationship is 4mA displays 40, 12mA displays 120, 20mA
displays 200. The max. display range is 9999, the min. display range is -1999.
SY LED6 LED Display meter has alarm function and 2-channel isolation switching quantity output, and
can display, control, alarm output signal synchronously. That alarm function can be realized through
programming. There are 2 wielding pad preset for user, if alarm function required, user needs to add 2 pieces
of PC452 optical coupler. That LED meter has two alarm points, and positive, negative alarm direction setting.
The alarm points is set based on the digits displayed in the LED panel, when it alarms, the last decimal point
in LED panel is flashing, the alarm signal data output can drive the alarm unit of optical coupler. SYLED
external shell is ABS plastic shell, external dimension is 72x36mm, height or thickness is 23mm.

1. Do not do reverse connection between input and power supply, otherwise is may cause permanent
2. Do not use it in high humidity and corrosive gas conditions; otherwise it may affect the durability of the

Technical Specification:
1. Power supply: DC regulated power supply, rippl≤5mV, 5V, 12V, 15V, 24V or other value.
Input signal is 4~20mA, no external power supply is required; it operates in loop powered mode.
2. Input signal: 0~5V, 0~10V, 1~5V, 0~±200mV, 0~20mA, 4~20mA, other customized input.
3. Operating temperature range: -40
4. Relative humidity: 20%90%RH
5. Shock vibration: in compliance with industrial ministry environment test II meters requirements.
6. Panel display mode: Red LED display, font height 14.2mm (0.56in), decimal point is settable.
7. Average sampling rate: 2.5times/second.
8. Digit display setting range:

9. Polarity conversion: lower than the ZERO value, it display “--”, higher than the ZERO value, it does not
display polarity symbol.
10. Accuracy: full range linearity error ±2 digits (relative to 2000).
11. Temperature influence error: ≤80PPM
12. Exceed the measuring range displays “oHH” or “oLL”.
13. Net weight: 35g. External dimension: 79×43×23mm. Panel cut-out dimension: 76.5×39.2 (+0.1 mm).

(Note: ZERO and SPAN value are related to input signal, eg.: input signal is 0-10V, the ZERO is 0V, SPAN is
10V; if input signal is 0~±200mV, ZERO is -200mV, SPAN is 200mV. The other signal inputs follow the same

Model Selection Table:

SY LED6- U(A)□ -P□- O8
Input voltage/Current

U10-5V A1
U20-10V A2
0-75mV A30-20mA
0-2.5V A44—20mA
0-±5V A50-±1mA
0-±10V A60-±10mA
0-±100mV A70-±20mA
U8: User-defined A8: User-defined

Power supply

P1DC24V P2
Display Value
DC15V P8: User-defined
O8: User-defined.

Model selection examples
E.g. 1: Signal input: 0-5V, display value: 0.0-50.0. Power supply: 24V
Model No: SY LED6-U1-P1-O8
E.g.2: Signal input: 0-10V, display value: 0.0-100.0, Power supply: 5V

Model No: SY LED6-U2-P3-O8
Note: If input signal is 4-20mA, no external power supply is required, the model no is SYLED6

Sunyuan Technology SY Series Intelligent Digital Display
Sunyuan Technology the newest developed SY LED / SY LCD series,with low cost, small size isolation transmitter 4-20mA two-wire passive intelligent display control instrument, dedicated to sensors and isolation transmitters |isolation amplifiers | PLC | DCS, etc.Isolated transmission of analog signals and intelligent display control. These LED or LCD four-bit high precision intelligent digital display meters use the principle of two-wire passive digital adjustment. The electrical signal passed through the digital measuring circuit is used as the input signal of the display meter and also the working power of the display meter. This two-wire passive type of operation eliminates the need for additional auxiliary power supplies. It is easy to connect in industrial field and has reverse protection and overcurrent protection. Products are widely used in industrial intelligent control, instrumentation intelligence, petrochemical, environmental monitoring, rail transit, electric vehicles, smart home, fire safety, mining monitoring and other industries on temperature, pressure, flow, liquid level, displacement, speed, frequency Monitoring of physical quantity control points. In industrial control systems, most applications use a variety of related sensors to convert physical quantities such as temperature, pressure, and displacement into 4-20 mA electrical signals, and intelligent digital display displays these electrical signals in real time for human convenience. Carry out all kinds of monitoring and control

Adopt product combination picture with "Sunyuan Intelligent Display Control Software

Adopt the related products data of design (SunYuan Intelligent display controll software)
一、Intelligent digital display with built-in intelligent display control software
1、Low cost and small size intelligent digital meter: SY LED1 / SY LCD1 type
SY LED1 detail technical information:


2、Panel embedded intelligent digital display:SY LED2 type
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3、Two-wire intelligent digital meter:SY LED3 / SY LCD3 type
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4、Isolation transmitter embedded intelligent digital display:SY LED4 / SY LCD4 type
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5、Hessmann isolation transmitter intelligent digital display:SY LED5 / SY LCD5 type
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二、Built-in intelligent display control software---two-wire passive type intelligent: signal isolator / isolation transmitter / isolation distributor
1、Passive two-wire 4-20mA intelligent monitoring isolator:DIN 1X1 ISO 4-20mA(LED1)
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3、Two-wire passive 4-20mA loop feed display control transmitter:DIN 1X1 ISO 4-20mA-F(LED) 
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4、Two-wire passive type 4-20mA isolated to voltage signal display control instrument:DIN 1X1 ISO 4-20mA-O(LED1)
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5、Two-wire AC signal (AC/DC) feed isolation display control smart meter:DIN 1X1 ISO NNAC-O1(LED1)
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6、Potentiometer,electric bridge etc other voltage sensor signal conversion display control instrument:DIN 1X1 ISO V-4-20mA(LED1)
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三、Built-in intelligent display control software---active intelligent: isolation amplifier / isolation transmitter / isolation distributor
1、Intelligent universal standard analog active transmitter: DIN 1X1 ISOEM (LED1) series
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2、Support differential input millivolt analog small signal distribution type display control transmitter: DIN 1X1 ISOEM-SD (LED1) series
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4、6000V high isolation analog signal display control transmitter: DIN 1X1 ISO EMH (LED1)
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四、Built-in intelligent display control software---sensor-specific intelligent: isolation amplifier / isolation transmitter / isolation converter
1、AC signal to direct current (AC/DC) display control transmitter: DIN 1X1 ISO AC-P-O (LED1) series
detail technical information:

2、Analog isolation to pulse frequency signal display control isolation transmitter: DIN 1X1 ISO U/A-P-F (LED1) series
Detailed technical information:

3、Sine wave, square wave to analog signal display control isolation transmitter: DIN 1X1 ISO (SY) F-P-O (LED1) series
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4、Electronic ruler, angular displacement signal display control isolation transmitter: DIN 1X1 ISO R-P-O (LED1) series
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5、Pt100/Cu50 RTD Signal Display Control Isolation Transmitter: DIN 1X1 ISO Z-W-P-O (LED1) Series
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6、AC true RMS signal to analog signal display control transmitter: DIN 1X1 ISO EM RMS-P-O (LED1) series
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7、PWM pulse width modulation signal isolation display control transmitter: DIN 1X1 ISO D-P-O-Q (LED1) series
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五、Built-in intelligent display control software---analog data collector (intelligent AD/DA converter)
1、2-channel analog AD acquisition display control isolation transmitter: ISO 4021 (LED1) series
detail technical information:

2、Bus RS232/485 isolated conversion 4-20mA display control module: ISO DA (LED1) series
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