Hangzhou Longer Industry Co., Ltd.

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Intelligence digital display switch

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Place of Origin:
Zhejiang China (Mainland)
Brand Name:
Car Make:
Volkswagen, Hyundai, TOYOTA,GM,Chery,...
Model Number:
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Hangzhou Longer Industry Co., Ltd.
China (Mainland) China (Mainland)
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Total Stuff:301 - 500 People
Manufacturer, Trading Company, Distributor/Wholesaler

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Item specifics

  • Place of Origin: Zhejiang China (Mainland)
  • Brand Name: longer
  • Car Make: Volkswagen, Hyundai, TOYOTA,GM,Chery,...
  • Model Number: E5-D
  • Minimum Order Quantity: 100 Piece/Pieces
  • Payment Terms: L/C,T/T


Intelligence digital display switch,Possessing more stable performance
Competitive price and high quality


E5-D Intelligent Digital display Switch Instructions

  E5-D series intelligent switch, possessing more stable performance. Adding water temperature controlling and oil/gas changeover functions, which more in favor of protecting the engine and reducer.

  E5-D series: Connecting to the Hall pressure gauge (power supply: 12V; transducer output: 0.3-4.5V; gas volume display: 5-18Mpa)

Wiring Method

1.       Brown wire: One way is connecting to negative electrode of ignition coil; other way is winding 5 circles around the ignition high pressure wire; another you can connect it to the speed signal wire of engine.

2.       Black wire: Earth wire of power. Connecting to negative electrode of battery.

3.       Red wire: Positive wire of power supply (12V). Key control output through connecting with fuse to wire of ignition.

4.       Blue wire: Gas output. Connecting to positive electrode of gas solenoid valve, emulator and relay, which used to make pump unwork.

5.       Yellow wire: Original water temperrature input wire of engine(0-5V). It need customize if it connecting to the negative temperature coefficient sensor (custom-tailor by needs).

6.       White wire: Pressure signal input wire. Connecting to output wire of pressure transmitter signal. (0.3V-4.5V).

7.       Green wire:  Connecting to positve power supply of pressure gauge.


Function Instruction

1.        When the LED indicator of P light, it means working oil-use-state.

1.1.       Light A means to chang oil-use to gas-use automatically, if exceed the set speed value or water temperature value.

1.2.       Light G means working under gasuse-state.

2.        Selection of mode of speed and water temperature control: Making P LED indicator flashing with extra long press until turning the key to start power supply, then select by pressing button,The G LED indicator flashing refer to the mode of speed control, or indicator lighting means the vehicle under mode of water temperature control. Shut-off the power after finishing selection, and system will memorize the mode you chosed (producers default setting: mode of speed control).

PRM value setting of speed control: After starting the vehicle,with long press until the screen shows 88 when the engine at idle state. Unpress the button, the screen will show the current value of speed,Pressing the button once more if tachometre value has jumped to your expected value, and sytem will memorize this speed as conversion piont.

Value of water temperature control setting: After starting and warming-up the vehicle, with long press until the screen shows 88. The screen will show the current value when loosening. To press once more to make the system memorize this temperature as conversion point.

NOTE: Under mode of water temperature control, you cant connect it to speed signal, for the vehicle will not obtain and will cut the gas supply within 3 seconds. And the switch can help you to recognize automatically wheather you connect it to speed signal or not.

3.        Dispaly and Protection

Above 19Mpa ,the LED indicator shows HH;below 4Mpa,it will flashing with LL;and F1 means there is no engine speed signal and cutting off the gas supply. The screen show the value between 5 to 18Mpa with LED will flash accordingly.

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