1. Introduzione
The SINOTIMER TM919B is a 30A 7-day programmable electronic timer switch designed for automatic control of various electrical equipment. It allows you to set specific ON/OFF times over a 24-hour or 7-day cycle, providing convenience and energy efficiency for applications such as streetlights, lamps, water heaters, air conditioners, and more.
Caratteristiche principali:
- Ideal for household use in DB Boards.
- High capacity: 5000 Watt / 30 Amps.
- Flexible programming: 24 Hours / 7 Days a Week Programmable.
- Automatic time error correction: +/- 30 seconds weekly.
- Multiple programs: Repeat programs with 16 ON/OFF settings.
- Manual ON/OFF control.
2. Prodotto finitoview

Figura 1: Fronte view of the TM919B timer switch, displaying the LCD screen with time and day, and the array of control buttons including P, D+, H+, M+, RESET, and MANUAL.

Figura 2: Angolato view of the TM919B timer switch, showing its side profile and the clear protective cover over the buttons.

Figura 3: lato view of the TM919B timer switch, detailing the wiring terminals (L, N, 1, 2, 3, 4, 5) and product specifications like voltage e le valutazioni correnti.
3. Specifiche
| Parametro | Valore |
|---|---|
| Intervallo di temperatura | da -20°C a +50°C |
| Volume di eserciziotage (UI) | 110V |
| Consumo energetico | 4.5 VA (MASSIMO) |
| Display | LCD |
| Contatto di commutazione | 1 commutatore |
| Programmi | 16 impostazioni ON/OFF al giorno o alla settimana |
| Isteresi | 2 secondi/giorno (a 25°C) |
| Intervallo minimo | 1 minuto |
| Capacità | 30A 250V AC |
| Memoria oscurata | 60 giorni |
| Intervallo del timer | Da 1 minuto a 168 ore |
| Errore medio | 1 second/24 hours (at 25°C) |
| Peso dell'articolo | 5.3 ounces (0.2kg) |
| Dimensioni del pacco | 3.95 x 3.2 x 2 pollici |
| Dimensioni dello schermo | 1.5 pollici |
4. Installazione e cablaggio
The TM919B timer switch is designed for DIN rail mounting, making it suitable for integration into electrical distribution boards. Ensure all power is disconnected before attempting installation.
Schema elettrico:

Figure 4: Wiring diagram for the TM919B. Terminals 1 and 2 are for power input (L and N). Terminals 3, 4, and 5 are for the output, typically used for NO (Normally Open) and NC (Normally Closed) connections to control the load.
- Potenza in ingresso: Connect the live (L) and neutral (N) wires to terminals 1 and 2 respectively. Ensure the voltage matches the timer's specification (110V for this model).
- Connessione di carico: The timer has a single changeover switch.
- Terminal 3: Normally Closed (NC) contact.
- Terminal 4: Common (COM) contact.
- Terminal 5: Normally Open (NO) contact.
- Connect your load (e.g., lamp, motor) between the common terminal (4) and either the NO (5) or NC (3) terminal, depending on whether you want the load to be ON or OFF when the timer is in its default state.
- Securely fasten all wires to prevent loose connections.
- Once wiring is complete, restore power and proceed with programming.
5. Operating Instructions and Programming
The TM919B timer allows for up to 16 ON/OFF programs. Follow these steps to set the current time and program the timer.
Funzioni dei pulsanti:
- P (Programma): Entra in modalità programmazione.
- D+ (Giorno): Regola il giorno della settimana.
- H+ (Ora): Regola l'ora.
- M+ (Minuto): Regola i minuti.
- RIPRISTINA: Resets all settings to factory defaults. Use a pointed object to press.
- MANUALE: Toggles between ON, AUTO, and OFF modes.
Impostazione dell'ora corrente:
- Premere il tasto D+ pulsante per impostare il giorno della settimana corrente.
- Premere il tasto H+ pulsante per impostare l'ora corrente.
- Premere il tasto M+ pulsante per impostare i minuti correnti.
- The time will automatically save after a few seconds of inactivity.
Programming ON/OFF Times (Up to 16 Programs):
- Premere il tasto P una volta il pulsante. Il display mostrerà "1 ON". Questo serve per impostare il primo orario di accensione.
- Premere H+ E M+ to set the desired hour and minute for the first ON event.
- Premere D+ to select the days of the week for this program. Options include: every day, specific days (e.g., MO-FR, MO-SA, SA-SU), or individual days. If you want the same setting every day, you do not need to press D+.
- Premere il tasto P button again. The display will show "1 OFF". This is for setting the first OFF time.
- Premere H+ E M+ to set the desired hour and minute for the first OFF event.
- Premere D+ again if you need to specify different days for the OFF event, or leave it if it matches the ON event's days.
- Repeat steps 1-6 for programs 2 through 16 (e.g., "2 ON", "2 OFF", etc.).
- Dopo aver impostato tutti i programmi desiderati, premere il tasto MANUALE button repeatedly until "AUTO" is displayed. This ensures the timer operates according to your programmed schedule.
Controllo manuale:
Premere il tasto MANUALE pulsante per scorrere le modalità operative:
- SOPRA: The output is continuously ON, overriding programmed settings.
- OFF: The output is continuously OFF, overriding programmed settings.
- AUTO: The timer operates according to the programmed ON/OFF schedules. Ensure the timer is in AUTO mode for automatic operation.
6. Manutenzione
The TM919B timer switch requires minimal maintenance. Keep the device clean and free from dust. Do not expose it to excessive moisture or extreme temperatures. If the display becomes dim or unresponsive, check the power supply. The internal battery provides backup for settings during power outages for up to 60 days.
7. Risoluzione Dei Problemi
| Problema | Possibile causa | Soluzione |
|---|---|---|
| Il timer non si accende/spegne agli orari programmati. | Not in AUTO mode; incorrect programming; power issue. | Press MANUAL until "AUTO" is displayed. Review programming steps carefully. Check power supply to the timer. |
| Il display è vuoto o poco luminoso. | No power supply; internal battery low (unlikely for display). | Check power connections. Ensure the timer is receiving power. |
| Cannot set time or programs. | Buttons unresponsive; unit frozen. | Press the RESET button using a pointed object. This will clear all settings, so you will need to reprogram. |
| Load not switching. | Incorrect wiring; faulty load; timer output issue. | Verify wiring according to the diagram. Test the load independently. If issues persist, contact support. |
8. Garanzia e supporto
This SINOTIMER product is covered by a standard manufacturer's warranty against defects in materials and workmanship. For warranty claims or technical support, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.
For further assistance, visit the official SINOTIMER store: Negozio SINOTIMER su Amazon





