1. Introducció
This manual provides comprehensive instructions for the installation, operation, and maintenance of the SINOTIMER TM919B 30A Programmable Electronic Timer Switch. This device is designed to automatically control the ON/OFF switching of various electrical appliances based on user-defined daily or weekly programs. Please read this manual carefully before installation and use to ensure proper function and safety.
2. Informació de seguretat
WARNING: Risk of electric shock. Installation should only be performed by a qualified electrician or trained personnel.
- Always disconnect power at the circuit breaker before installing or servicing the timer switch.
- Assegureu-vos que totes les connexions de cablejat siguin segures i que compleixin els codis elèctrics locals.
- Do not exceed the maximum load rating of 30A.
- This device is intended for indoor use only. Avoid exposure to moisture or extreme temperatures.
- No intenteu desmuntar ni reparar la unitat vosaltres mateixos. Poseu-vos en contacte amb personal de servei qualificat.
3. Producte acabatview
The SINOTIMER TM919B is a digital timer switch featuring a large LCD display, multiple programming options, and a manual override function. It is designed for DIN rail mounting.
3.1. Components i controls

Figura 1: Davant view of the TM919B timer switch, showing the LCD display, control buttons, and terminal connections.

Figura 2: En angle view of the TM919B with the transparent protective cover open, revealing the programming buttons (P, D+, H+, M+, RESET, MANUAL).
- Pantalla LCD: Shows current time, day, and program status.
- Botó P (Programa): Enters/exits program setting mode.
- D+ (Day) Button: Adjusts day of the week in setting modes.
- H+ (Hour) Button: Adjusts hour in setting modes.
- M+ (Minute) Button: Adjusts minute in setting modes.
- Botó de reset: Clears all settings and resets the timer to factory defaults.
- Botó MANUAL: Alterna entre els modes ON, AUTO i OFF.
- Connexions de terminals: For power input and load output.
4. Especificacions
| Característica | Especificació |
|---|---|
| Model | TM919B |
| Voltage | 220V (AC200-250V) |
| Freqüència | 50/60Hz |
| Càrrega màxima | 30A (càrrega resistiva) |
| Programes | 16 ON/OFF programs per day/week |
| Interval mínim | 1 minut |
| Còpia de seguretat de la bateria | Built-in rechargeable battery (for memory retention) |
| Muntatge | Carril DIN de 35 mm |
| Dimensions | Consulteu la figura 3 |

Figura 3: Detailed dimensions of the TM919B timer switch, showing height, width, and depth measurements.
5. Configuració i instal·lació
Follow these steps for safe and correct installation of your timer switch.
5.1. Muntatge
- Ensure power is disconnected at the main circuit breaker.
- Mount the TM919B onto a standard 35mm DIN rail. The device features a clip mechanism on the back for secure attachment.
- Press the orange clip at the bottom of the unit to release it from the DIN rail if removal is necessary.

Figura 4: lateral view of the TM919B, highlighting the orange DIN rail mounting clip.

Figura 5: Enrere view of the TM919B, illustrating the DIN rail mounting mechanism.
5.2. Esquema de cablejat
Refer to the diagram below for correct wiring connections. Ensure all connections are tight and insulated.

Figura 6: lateral view of the TM919B showing the wiring diagram printed on the casing. Terminals 1 and 2 are for power input (L and N). Terminals 3, 4, and 5 are for load output (Common, Normally Open, Normally Closed).
- Terminals 1 i 2: Power Input (L - Live, N - Neutral). Connect your 220V AC supply here.
- Terminal 3: Common (COM) for the output relay.
- Terminal 4: Normally Open (NO) output. The load will be powered when the timer is ON.
- Terminal 5: Normally Closed (NC) output. The load will be powered when the timer is OFF.
For typical applications where the load is switched ON by the timer, connect the load between Terminal 3 (COM) and Terminal 4 (NO).
6. Instruccions de funcionament
6.1. Configuració inicial i reinici
- After connecting power, the display may be blank or show random characters. Press the RESET button with a pointed object (e.g., a pen tip) to clear all memory and reset the timer. The display will show "0:00" and "MO".
- Allow the internal battery to charge for at least 30 minutes before programming for optimal performance and memory retention during power outages.
6.2. Configuració de l'hora i el dia actuals
- Manteniu premut el botó D+ button to set the current day of the week (MO, TU, WE, TH, FR, SA, SU).
- Manteniu premut el botó H+ button to set the current hour (0-23).
- Manteniu premut el botó M+ button to set the current minute (0-59).
- Release the buttons when the correct time and day are displayed. The timer will automatically save the settings.
6.3. Programming ON/OFF Cycles
The TM919B supports up to 16 ON/OFF programs. Each program consists of an ON time and an OFF time.
- Premeu el botó P button once. The display will show "1 ON". This is for the first ON program.
- Ús D+ to select the day(s) for this program. Options include:
- MO TU WE TH FR SA SU (Every day)
- MO (Monday only)
- TU (Tuesday only)
- ...
- MO TU WE TH FR (Weekdays)
- SA SU (Weekends)
- MO TU WE (Mon-Wed)
- TH FR SA (Thu-Sat)
- MO WE FR (Mon, Wed, Fri)
- TU TH SA (Tue, Thu, Sat)
- MO TU WE TH FR SA (Mon-Sat)
- Ús H+ i M+ to set the desired ON hour and minute.
- Premeu el botó P button again. The display will show "1 OFF". This is for the first OFF program.
- Ús D+, H+, i M+ to set the desired OFF day, hour, and minute. Ensure the OFF time is after the ON time for the same program.
- Repeat steps 1-5 for additional ON/OFF programs (up to 16). If you don't need all 16 programs, simply press P to cycle through unused programs until you return to the current time display.
- To exit programming mode and save settings, press the clock button (usually labeled with a clock icon, or simply wait for 30 seconds without input).
6.4. Anul·lació manual
Premeu el botó MANUAL botó per anar canviant pels modes de funcionament:
- ACTIVITAT: The timer output is continuously ON, ignoring all programs.
- AUTOMÀTIC: The timer operates according to the programmed ON/OFF cycles. This is the standard operating mode.
- DESACTIVAT: The timer output is continuously OFF, ignoring all programs.
Ensure the timer is set to AUTO per a un funcionament programat.
7. Manteniment
- The TM919B is designed for maintenance-free operation.
- Netegeu l'exterior amb un drap suau i sec. No utilitzeu productes de neteja abrasius ni dissolvents.
- Ensure the internal battery is charged by keeping the unit powered for at least 24 hours initially, and periodically thereafter, to maintain time and program memory during power outages.
8. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| La pantalla està en blanc. | Sense subministrament d'alimentació; bateria interna descarregada. | Check power connections. Allow unit to charge for 30 minutes. |
| Timer not switching load. | Incorrect wiring; timer in MANUAL ON/OFF mode; incorrect program settings. | Verify wiring (refer to Figure 6). Ensure timer is in AUTO mode. Check program times and days. |
| Programs are lost after power outage. | Internal battery not fully charged or faulty. | Ensure unit is powered for at least 24 hours to fully charge the battery. If problem persists, contact support. |
| Els botons no responen. | Unit frozen; temporary glitch. | Premeu el botó RESET botó. |
9. Garantia i Suport
Els productes SINOTIMER es fabriquen amb estàndards d'alta qualitat. Per obtenir informació sobre la garantia o assistència tècnica, consulteu la documentació proporcionada amb la vostra compra o visiteu el lloc web oficial de SINOTIMER. weblloc web. Conserveu el rebut de compra com a comprovant de compra.
For further assistance, you may contact SINOTIMER customer service through their official channels.





