1. Úvod
The S866 LCD Display Meter is a versatile control panel designed for electric bicycles, compatible with 24V, 36V, and 48V systems. It provides essential riding data, allows for control of various e-bike functions, and features a clear, backlit display for visibility in various conditions. This manual will guide you through the installation, operation, and maintenance of your S866 display.

Obrázek 1.1: Přední strana view of the S866 LCD display meter, showing speed, battery, and trip information.
2. Nastavení a instalace
The S866 LCD Display Meter is designed for easy installation on handlebars with a diameter of 22.2mm. Ensure your e-bike controller uses communication protocol No. 2 for compatibility.
2.1 Obsah balení
- S866 LCD Display Meter
- Montážní konzola
- Waterproof Connector Cable
2.2 kroky instalace
- Secure the mounting bracket to your bicycle's handlebar (22.2mm diameter) using appropriate tools.
- Slide the S866 LCD Display Meter onto the bracket until it clicks into place.
- Connect the display's waterproof plug to the corresponding port on your e-bike controller. Ensure the connection is firm and secure.
- Verify that your controller uses communication protocol No. 2. This display is only compatible with this protocol.

Figure 2.1: Diagram illustrating the S866 LCD display dimensions, bracket diameter (approx. 22.2mm), line length (approx. 21cm), waterproof grade (IP65), and communication protocol (No. 2).

Figure 2.2: The S866 LCD display mounted on an electric bicycle handlebar, demonstrating its compact size and clear visibility.
3. Návod k obsluze
The S866 display provides various functions and information. Familiarize yourself with the buttons and display areas for optimal use.

Figure 3.1: Detailed diagram of the S866 LCD display panel, labeling buttons and display areas with corresponding functions.
3.1 Funkce tlačítek
- + Tlačítko: Up button, used to increase values or assist levels.
- Vypínač: Power on/off button, also used to switch information.
- - Tlačítko: Down button, used to decrease values or assist levels.
3.2 Základní operace
- Zapnutí/vypnutí: Podržte Moc button to power on. Hold it again to power off. If the e-bike is not used for more than 10 minutes, the display will automatically turn off (hibernation mode).
- Normální rozhraní: Podržte Moc button to enter the normal interface.
3.3 Pokročilé operace

Figure 3.2: Instructions for operating the S866 LCD display, including headlight control, assist level changes, 6km/h push mode, and multi-function area navigation.
- Ovládání světlometů: Podržte + button to turn on the backlight and headlight simultaneously. Hold the + button again to turn them off.
- Change Assist Level: Stiskněte tlačítko + or - button to increase or decrease assist levels. Level 1 is the lowest, Level 5 is the highest. Level 0 disables PAS mode. The display returns to the default assist level each time it powers on.
- 6km/h Push Mode: Podržte - button to enter 6km/h push mode, which moves the vehicle forward at a stable speed (approx. 6km/h). This is useful when pushing the vehicle. Release the button to exit this mode.
- Multi-function Area: Stiskněte tlačítko Moc button to switch between different information displayed in the multi-function area: ODO (Odometer), TRIP (Trip Distance), VOL (Voltage), TIME (Ride Time), and back to ODO.
4. Parameter Setting Mode
This is an advanced function. It is advised not to modify parameters unless you fully understand their implications, as incorrect settings can cause malfunction. Please read these instructions carefully before modifying and note down previous parameter values so you can restore them if needed.
Under the normal interface, press the + a - buttons simultaneously to enter parameter setting mode. The first screen shows P01. Press the Moc button to switch to the next parameter, and press the + or - buttons to increase or decrease the value of each parameter. Press + a - znovu pro ukončení tohoto režimu.
In this mode, there are a total of 20 parameters (P01-P20):

Figure 4.1: Parameter settings P01-P05 for the S866 LCD display, including backlight brightness, metric change, battery voltage, hibernate mode, and assist levels.
- P01: Jas podsvícení (1-lowest, 3-highest)
- P02: Change metric (0: KM; 1: MILE)
- P03: Select battery voltage (24V/36V/48V/60V, 36V by default)
- P04: Hibernate mode time (from 1 to 60 minutes, 0: never enter this mode)
- P05: Total assist levels (0: 3 levels; 1: 5 levels)

Figure 4.2: Parameter settings P06-P10 for the S866 LCD display, including wheel size, magnet number, speed limit, zero start, and driving mode selection.
- P06: Wheel size in inch (step: 0.1)
- P07: Number of magnets for speed calculation (range: 1-255)
- P08: Speed limit (range: 0-100km/h. This value is always in km/h even if the metric changed from km to mile.)
- P09: Zero speed start (0: zero stat; 1: Non zero start - means need to provide vehicle with initial speed then turn throttle will activate motor)
- P10: Driving mode selection (0: Only assist mode; 1: Only electric mode; 2: Both mode)

Figure 4.3: Parameter settings P11-P20 for the S866 LCD display, including assist sensitivity, starting power, disc type, current limit, low voltage protection, ODO reset, cruise mode, speed ratio, assist level 0, and protocol selection.
- P11: Assist sensitivity (range 1-24, sets the delay between pedaling and motor start; smaller value means the motor starts working after less pedal movement)
- P12: Assist starting power (range: 1-5, sets the starting power of the motor; bigger value means higher starting power)
- P13: Assist disc type (5 magnets, 8 magnets, 12 magnets)
- P14: Current limit of controller (range 1-20A, 12A by default)
- P15: Nízký objemtage protection setting of controller
- P16: ODO distance reset (držet + for 5 seconds to reset this value; hold - for 5 seconds to reset factory settings)
- P17: Cruise mode (0: cruise mode disabled; 1: cruise mode enabled; auto-cruise mode or cruise mode enabled by pressing 1 button - controller should be compatible. Auto-cruise mode is enabled automatically by holding the throttle position for several seconds - this function is realized by the controller)
- P18: Speed ratio (range: 50%~150%, used to correct the speed if the user finds it is not accurate)
- P19: Assist level 0 enable/disable (0: with level 0; 1: without level 0)
- P20: Protocol selection (0: NO.2 PROTOCOL; 1: SS PROTOCOL; 2: RESERVED; 3: RESERVED)
5. Údržba
To ensure the longevity and optimal performance of your S866 LCD Display Meter, follow these maintenance guidelines:
- Čištění: Otřete displej a tělo měkkým hadříkemamp cloth. Avoid using abrasive cleaners or solvents, as they may damage the ABS material or the screen.
- Vystavení vodě: While the display is IP65 waterproof, avoid submerging it in water or exposing it to high-pressure water jets. Ensure the waterproof connector remains sealed.
- Kontrola připojení: Pravidelně kontrolujte všechna kabelová připojení, abyste se ujistili, že jsou bezpečná a bez koroze nebo poškození.
- Skladování: If storing your e-bike for an extended period, keep the display in a dry, cool place away from direct sunlight.
- Vyhýbání se nárazům: Chraňte displej před fyzickými nárazy, které by mohly poškodit obrazovku nebo vnitřní součásti.
6. Řešení problémů
This section provides solutions to common issues and explanations for error codes you might encounter.
6.1 Chybové kódy
The S866 display can show various error codes to indicate specific issues. Refer to the table below for their meanings:

Figure 6.1: Table listing S866 LCD display error codes (E00-E13) and their corresponding descriptions.
| kód (desítkové) | Popis |
|---|---|
| E00 | Normální |
| E01 | Rezervováno |
| E02 | Chyba brzdy |
| E03 | Assist sensor error |
| E04 | 6KM/H push mode |
| E05 | Režim plavby |
| E06 | Baterie nízká objtage ochrana |
| E07 | Chyba motoru |
| E08 | Chyba plynu |
| E09 | Chyba ovladače |
| E10 | Chyba příjmu COM |
| E11 | Chyba odeslání COM |
| E12 | Chyba komunikace BMS |
| E13 | Chyba předního světla |
6.2 Běžné problémy a řešení
- Displej se nezapíná:
- Zkontrolujte, zda je baterie nabitá a správně připojená.
- Ensure the display cable is securely plugged into the controller.
- Nesprávné údaje o rychlosti/vzdálenosti:
- Verify the wheel size (P06) and number of magnets (P07) settings in the parameter mode are correct for your e-bike.
- Adjust the speed ratio (P18) if necessary.
- Motor nereaguje:
- Check for error codes (E07, E08, E09).
- Ensure the communication protocol (P20) is set to NO.2 PROTOCOL.
- Verify assist sensitivity (P11) and starting power (P12) settings.
- Display Shows E10 Error:
- This indicates a COM receive error. Ensure your controller uses communication protocol No. 2. The display is only compatible with this protocol.
- Check the connection between the display and the controller.
7. Specifikace
Detailed technical specifications for the S866 LCD Display Meter:
- Model: S866
- Kompatibilní svtage: 24 V, 36 V, 48 V
- Typ displeje: LCD
- Materiál: Akrylonitrilbutadienstyren (ABS)
- Vodotěsná třída: IP65
- Bracket Diameter: Přibližně 22.2 mm / 0.9 palce
- Délka řádku: Přibl. 21 cm / 8.3 palce
- Komunikační protokol: Protocol No. 2
- Rozměry (balení): 11.6 x 7.9 x 7.4 cm
- Hmotnost: 100 gramů
- Reference výrobce: SPYMINNPOOwxb12da94k1645
8. Záruka a podpora
SPYMINNPOO is committed to providing quality products and customer satisfaction. If you have any questions or encounter issues with your S866 LCD Display Meter, please contact us.
8.1 Service Guarantee
If you have any questions about your S866 LCD Display Meter, you can contact us via email at any time. We are committed to responding and resolving your problems promptly, providing better service.
8.2 Kontaktní informace
For support, please refer to the contact details provided with your purchase or visit the official SPYMINNPOO brand store on Amazon: SPYMINNPOO Brand Store.




