Introducción
The SINOTIMER TM-919B is a highly versatile 7-day, 24-hour programmable digital timer switch designed for automatic control of various electrical equipment. This device is ideal for applications requiring precise scheduling, such as street lamps, neon lights, water heaters, air conditioners, and agricultural facilities. Its robust design and user-friendly interface ensure reliable operation and easy setup.
Key features include a 30A load capacity, 16 ON/OFF programs, and a built-in rechargeable battery for memory backup during power failures. The timer is designed for DIN rail mounting, making it suitable for integration into electrical distribution boards.
Producto terminadoview

Figura 1: Frente view of the TM-919B Digital Timer, displaying the time and control buttons for programming.

Figura 2: Lado view of the TM-919B, illustrating its compact design and the integrated DIN rail mounting clip.

Figura 3: Frente view of the TM-919B with approximate dimensions: 8.7cm height, 6cm width, and 4.5cm depth.
Precauciones de seguridad
Always disconnect power before installation or maintenance. Installation should be performed by a qualified electrician in accordance with local electrical codes. Do not expose the device to moisture or extreme temperatures. Ensure proper wiring to avoid damage to the unit or connected appliances.
Configuración e instalación
- Montaje: The TM-919B is designed for DIN rail mounting. Securely attach the timer to a standard 35mm DIN rail within your electrical distribution board.
- Alambrado:
- Connect the main power supply (220-240V AC, 50/60Hz) to the input terminals (typically marked L and N or 1 and 2).
- Connect the load (appliance) to the output terminals (typically marked 3, 4, 5 for a changeover switch). Refer to the wiring diagram on the device for precise connections. Ensure the load does not exceed 30A (resistive) or 15A (inductive).
- Encendido inicial: After wiring, restore power. The display should illuminate. The built-in battery will begin charging, which may take a few hours for full capacity.
- Reset: If the display is erratic or you wish to clear all settings, press the "R" (Reset) button using a pointed non-metallic object. This will clear all programs and reset the clock.
Instrucciones de funcionamiento
Configuración de la hora actual
- Presione el "PAG" button (Program) once to enter time setting mode.
- Prensa "D+" para configurar el día actual de la semana.
- Prensa "H+" para configurar la hora actual.
- Prensa "M+" para configurar el minuto actual.
- Para cambiar entre el formato de 12 horas (AM/PM) y 24 horas, presione "PAG" y "H+" simultáneamente.
- Presione el "PAG" button again to exit time setting and return to normal operation.
Programming ON/OFF Cycles (16 Programs)
El temporizador admite hasta 16 programas de encendido/apagado. Cada programa consta de una hora de encendido y una hora de apagado.
- Presione el "PAG" button repeatedly to cycle through the program settings (1 ON, 1 OFF, 2 ON, 2 OFF, ..., 16 ON, 16 OFF). The display will show "1 ON", "1 OFF", etc.
- When "1 ON" is displayed, use "D+" to select the day(s) of the week for this ON event. Options include individual days, weekdays, weekends, or all days.
- Usar "H+" y "M+" para configurar la hora y los minutos de encendido deseados.
- Prensa "PAG" again to move to "1 OFF". Set the day(s), hour, and minute for the OFF event using "D+", "H+", y "M+".
- Repeat steps 2-4 for any additional programs (up to 16).
- Después de configurar todos los programas deseados, presione el botón "PAG" button until the display shows the current time, or wait for 30 seconds for it to automatically return to normal operation.
Anulación manual
The timer has a manual override function to temporarily change the output state.
- Presione el "MANUAL" button (or a button labeled with a hand icon, if present) repeatedly to cycle through modes:
- EN: La salida está continuamente encendida.
- AUTO ENCENDIDO: La salida está actualmente activada, siguiendo el programa.
- OFF: La salida está continuamente apagada.
- APAGADO AUTOMÁTICO: La salida está actualmente APAGADA, siguiendo el programa.
- Select "AUTO ON" or "AUTO OFF" to ensure the timer follows the programmed schedule.
Mantenimiento
The SINOTIMER TM-919B is designed for low maintenance. Keep the device clean and free from dust. Do not use abrasive cleaners. The built-in rechargeable battery is designed for long life and typically does not require replacement under normal operating conditions. If the display frequently goes blank during power outages, the battery may need servicing by a qualified technician.
Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| La pantalla está en blanco. | No hay fuente de alimentación; batería interna descargada. | Check power connections. Allow unit to charge for several hours after initial power-up. |
| El temporizador no se enciende ni se apaga en los horarios programados. | Incorrect programming; manual override set to ON/OFF; current time incorrect. | Verify program settings. Ensure manual override is set to "AUTO ON" or "AUTO OFF". Correct current time. |
| Output is always ON or always OFF. | Anulación manual activada. | Press the "MANUAL" button until "AUTO ON" or "AUTO OFF" is displayed. |
| Erratic display or unresponsive buttons. | System error; static electricity. | Perform a full reset by pressing the "R" button. Reprogram all settings. |
Presupuesto
| Parámetro | Valor |
|---|---|
| Modelo | TM-919B |
| Fuente de alimentación | 220-240 V CA, 50/60 Hz |
| Capacidad de carga | 30A (Resistive), 15A (Inductive) @ 250V AC |
| Programas | 16 ON/OFF settings per day/week |
| Intervalo mínimo | 1 minuto |
| Intervalo de tiempo | 1 minute to 168 hours (7 days) |
| Batería interna | 1.2V/40mA rechargeable (for memory backup) |
| Corrección de errores de tiempo | ±30 seconds per week |
| Dimensiones (L x An x Al) | 87mm x 60mm x 45mm (approx. 8.7 x 4.5 x 6 cm) |
| Montaje | Carril DIN |
| Material | ABS + Componentes electrónicos |
| Certificaciones | IEC 60367, CE |
Garantía y soporte
Specific warranty information for this product is not provided in the available documentation. For warranty claims or technical support, please contact the retailer or manufacturer directly. Ensure you have your purchase receipt and product model number (TM-919B) ready when contacting support.





